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Category Archives: Specialty Metal Fasteners

Sulfuric Acid: Which Fastener Material is Best?

Posted on September 6, 2022 by Kathleen

Sulfuric Acid ( H2SO4 ) is one of the most widely used and important acids, being an essential component to many industries. Equally as important is selecting the right material to survive this environment. This newsletter will provide options. WHICH IS BEST? That depends on BOTH concentration and temperature – … Continue reading →

Material Focus: 17-4 Bolts for Extreme Strength

Posted on July 20, 2022 by Kathleen

High strength bolts are one of the main reasons engineers look to specialty materials. 17-4PH bolts often fulfill this demand. In this short newsletter we hope to answer many of your questions surrounding the age-hardened stainless steel we call 17-4PH How much strength can 17-4PH provide? 17-4PH bolts can provide … Continue reading →

Posted in Application, Blog, High Strength, Material, Specialty Metal Fasteners | Tagged 17-4 Bolts, 17-4 Fasteners, 17-4 PH bolts, 17-4 PH fasteners, 17-4 PH Screws, 17-4 Screws, 17-4PH screws for high strength, Bolts for high strength, Fasteners for high strength, High strength 17-4 PH, Screws for high strength | Leave a comment

Rolled Threads vs Cut Threads

Posted on June 17, 2022 by Kathleen

Q: Can you explain to me what the difference is between cut and rolled threads? A: Cut threads can also be referred to as machined threads. The machining cuts away the material to create the thread form. Rolled threads means the threads are formed by pressing the parts between 2 … Continue reading →

Posted in FAQs, Material, Specialty Metal Fasteners | Tagged cut threads compared to rolled threads, cut threads vs rolled threads, cut vs rolled threads, rolled threads compared to cut threads, rolled threads vs cut threads, rolled vs cut threads | Leave a comment

Grade 7 Titanium offers Edge on Corrosion

Posted on June 15, 2022 by Kathleen

Q: When do you use Titanium Grade 7 Bolts? A: Titanium grade 7 is similar in strength to grade 2 bolts but the material is alloyed with added palladium. This addition gives Titanium grade 7 bolts improved corrosion resistance in mineral acids and strong brines. This is ideal in salt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Grade 7 titanium bolts, grade 7 titanium bolts for corrosion resistance, grade 7 titanium for corrosion resistance, Grade 7 titanium screws, grade 7 titanium screws for corrosion resistance | Leave a comment

Bolts Resistant to Hot Saltwater

Posted on June 15, 2022 by Kathleen

Q: Can titanium handle hot saltwater conditions? A: Both grade 2 and grade 5 titanium bolts can be used in temperatures as high as 500°F (260°C). Remember as heat increases this can affect the strength of the material: https://www.specialfastenersbolt.com/titanium-fasteners-flanges.html#Mechanical

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged corrosion resistanced to hot saltwater, hot saltwater corrosion resistance, resistance to hot saltwater, titanium bolts for resistance to hot saltwater, titanium screws for resistance to hot saltwater | Leave a comment

High Strength Monel K500 Compared to Titanium Grade 5

Posted on June 15, 2022 by Kathleen

Q: How does Monel K500 Compared to Titanium Grade 5? A: Both Monel bolts and titanium bolts offer excellent resistance to saltwater conditions. Titanium has just a slight edge on corrosion resistance to stagnant seawater compared to Monel – but this is minuscule. The main differences are strength and applications. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged grade 5 titanium compared to Monel K500, Monel and Titanium for saltwater strength, Monel K500 compared to Grade 5 titanium, Monel K500 compared to titanium Grade 5, titanium grade 5 compared to Monel K500 | Leave a comment

Inconel vs Hastelloy for High Strength Corrosion

Posted on June 15, 2022 by Kathleen

Q: Can Hastelloy bolts provide high strength? A: Hastelloy C276 bolts can provide about 107ksi of strength. They are typically used for high temperature corrosion resistance. For corrosive applications where higher strength is needed, you may also want to consider Inconel 625. Inconel 625 bolts offer 144ksi of strength and … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Inconel 625 bolts for high strength corrosion resistance, Inconel 625 for high strength corrosion resistance, Inconel 625 screws for high strength corrosion resistance, Inconel bolts for high strength corrosion | Leave a comment

Bolts for Boiling Sulfuric Acid

Posted on June 15, 2022 by Kathleen

Q: What fastener material is best for boiling sulfuric acid? A: Generally speaking, for 20-40% concentrations, Alloy 20 bolts will be the best bet for an economic solution. For all other concentrations in boiling H2SO4 you would have to use tantalum bolts, which can be costly. Though Hastelloy bolts work … Continue reading →

Forging, Broaching, EDM – Which is best?

Posted on June 15, 2022 by Kathleen

Q: I am looking to get some socket head cap screw made – what is the difference between forging, broaching, or EDM’ing the sockets? A. Broaching is a machining process that uses a toothed tool (broach) to remove material. Linear and Rotary are the main types of broaching. EDM (Electrical … Continue reading →

Posted in FAQs, Material, Specialty Metal Fasteners | Tagged broached bolt, broached screw, edm bolt, electrical discharge machining, forged bolt, forged screw, machined bolt, machined screw | Leave a comment

A286 Bolt Torque Range

Posted on April 15, 2022 by Kathleen

Q: Hi, I need a torque range for a A286 (aged, 160 ksi UTS) 1″-8 hex bolt. The calculator gives a torque value of 826 ft*lbs but is there a range that is acceptable? A: One thing you have to remember about torque, is it is an approximation. You could … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged A286 ASTM F2281 screw for high temperature, A286 bolt torque, A286 fastener torque, A286 torque range, torque range | Leave a comment

17-4 H900 Heat Treatment Failure

Posted on April 15, 2022 by Kathleen

Q: We have a drawing for a 17-4 1″ bolt that we would like to order which can be heat treated to H900 – H1050. Are there any heat treat conditions that we should avoid? I’ve heard H900 can lead to sudden failure? Is this true? A: With the 17-4PH … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged 17-4 bolt failure, 17-4 screw failure, 17-4PH bolt failure, 17-4PH fastener failure, 17-4PH screw failure | Leave a comment

316 for High Temperatures

Posted on April 15, 2022 by Kathleen

Q: I don’t see 316 on your sight but would you know if 316H material can be useed at 1500F? A: I believe 316H will survive 1500F without significant oxidation. However, please be aware, at that temperature, the material will lose a significant % of its strength. The material already … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged 316 at high temperatures, 316 bolts at high temperatures, 316H bolts at 1500f, 316H screws at 1500F, High Temperature, High temperature bolts, high temperature fasteners, High temperature screws | Leave a comment

Number of Threads for Strength: Fine vs Coarse Threads

Posted on December 21, 2021 by Kathleen

Q: I’m designing a process that must be able to handle a high load at about 1000F. I’m planning to use A286, but I now need to know what bolt length size to use to make this machinery stable. I’d like to use as short small of a bolt as possible so how … Continue reading →

Posted in Advanced Ceramic Fasteners, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged fine bolt threads verses coarse bolt threads, fine bolt threads vs coarse bolt threads, fine screw threads verses coarse screw threads, fine screw threads vs coarse screw threads, fine threads verses coarse threads, fine threads vs coarse threads, fine verses coarse threads, fine vs coarse threads, How many threads per in on a bolt, How many threads per inch, How many threads per inch on a screw, number of threads for strength, Right number of threads on a bolt, right number of threads on a screw, What is the right number of threads per inch | Leave a comment

Alloy 330 for 1000C in Cyclic Conditions

Posted on December 3, 2021 by Kathleen

Q: Looking for a fastener to bolt together two HAST-X sheets that will be used as part of a furnace fixture assembly. Furnace will be used at temperatures up to 1000°C with cycling from 20°C to 1000°C and back to 20°C over a period of 2 days. This will be … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged 1000C bolts, 1000C screws, Alloy 330 bolts for 1000C, alloy 330 bolts for cyclic temperatures, Alloy 330 bolts for flutuating temperatures, Alloy 330 for 1000C, Alloy 330 for cyclic temperatures, Alloy 330 for flutuating temperatures, Alloy 330 screw for 1000C, Alloy 330 screws for 1000C, Alloy 330 screws for cyclic temperatures, Alloy 330 screws for flutuating temperatures | Leave a comment

Understanding QQ-N-286 and QQ-N-281

Posted on December 3, 2021 by Kathleen

Q: My customer is asking me for a hex head that is QQ-N-286 per MIL Spec. Do you know what he is asking for? I’m confused. A: Yes we can help. First let’s look at the QQ-N-286. This refers to material Monel K500. Monel is a nickel alloy used for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged bolt per QQ-N-281, bolt per QQ-N-286, bolt per QQN281, bolt per QQN286, bolts per QQ-N-281, bolts per QQ-N-286, bolts per QQN286, Monel Bolt per QQ-N-281, Monel Bolt per QQ-N-286, Monel per QQ-N-281, Monel per QQ-N-286, Monel screw per QQ-N-281, Monel screw per QQ-N-286, QQ-N-281 bolts, QQ-N-281 screws, QQ-N-286 bolts, QQ-N-286 screws, QQN281, QQN281 bolts, QQN281 screws, QQN286 bolts, QQN286 screws, screw per QQ-N-281, screw per QQ-N-286, screw per QQN281, screw per QQN286, screws per QQ-N-281, screws per QQ-N-286, screws per QQN281, screws per QQN286 | Leave a comment

What Does Specification ASTM F2281 Mean?

Posted on November 18, 2021 by Kathleen

Q: My customer is asking for a 1/2″ bolt for a high temperature application to 1300F that is to the spec ASTM F2281. What material is this and what is ASTM F2281? A: The specification ASTM F2281 covers several materials including Inconel, Alloy 330 and A286. The spec does not … Continue reading →

A286 Tensile Strength of 160ksi

Posted on November 18, 2021 by Kathleen

Q: Your strength chart for A286 says it offers 120-160 ksi tensile strength. What does this mean? And how can I insure I get bolts that are 160ksi? Is this the spec ASTM A453 Grade 660? A: We can insure you get your bolts made to this tensile strength but … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged A286 bolt per ASTM A453, A286 bolt to 160ksi, A286 cold worked, A286 cold-worked bolt, A286 cold-worked screw, A286 per ASTM A453, A286 screw per ASTM A453, A286 screw to 160ksi, A286 to 160ksi | Leave a comment

How does 316 Stainless Compares to Specialty Steel Alloys

Posted on November 1, 2021 by Kathleen

316 stainless is a familiar alloy to many of us and perhaps one of the most widely used fastening materials. Though it serves a critical function for industry, 316 can often fall short in servicing challenging high strength, temperature and corrosion resistant applications. Here is how it measures up in … Continue reading →

High Temperature Lock Nuts for Temps Over 900F

Posted on October 28, 2021 by Kathleen

I am bolting 321 stainless steel ducts (we are discussing changing to grade 91 alloy but this is only a possibility), and want to use locknuts to minimize potential for debris. The application is at 900-1050F at the bolts, so I am not sure what locknuts are available at this … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 compared to A193, A286 compared to A193 B8M, A286 for high temperatures, A286 lock nuts, A286 locknuts, A286 locknuts for high temperatures, A286 vs A193, A286 vs A193 B8M, High temperature lock nuts, high temperature locknuts | Leave a comment

Understanding Different Flat Washers: General Purpose, SAE, USS & Oversize

Posted on October 28, 2021 by Kathleen

Q: What is the difference between a general purpose, SAE, USS and oversized washer? Are they all flat washers or different styles. And is one better than the other? A: General purchase, SAE, USS and oversize are all flat washers and all serve the same purpose of distributing the load … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged general purpose compared to oversized flat washers, general purpose compared to oversized washers, General purpose flat washers, general purpose vs oversized flat washers, general purpose vs oversized washers, general purpose washers compared to oversized washers, general purpose washers vs oversized washers, Oversize flat washers, oversized flat washers, SAE compared to USS flat washers, SAE compared to USS washers, SAE flat washers, SAE vs USS flat washers, SAE vs USS washers, SAE washers compared to USS washers, SAE washers vs USS washers, USS flat washers | Leave a comment

FF-S-86 specification for a Flat Head Socket Cap Screw

Posted on October 27, 2021 by Kathleen

Q: Hoping you can help me out. This seems like a technical screw that you may have knowledge on. My customer asked me for a 1/2″-13 x 2″ Long screw FF-S-86 TY IV, QQ-N-281. I’m clear on the size but what does the rest mean? I don’t even know the … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged FF-S-86, FF-S-86 bolts, FF-S-86 Monel bolt, FF-S-86 Monel Screw, FF-S-86 screws, Monel bolt per FF-S-86, Monel flat head per FF-S-86, Monel flat head screw per FF-S-86, Monel flat head socket cap, Monel flat head socket cap per FF-S-86, Monel flat head socket cap screw, Monel flat head socket cap screw per FF-S-86, Monel per QQ-N-281, Monel screw per FF-S-86, QQ-N-281 Monel bolt, QQ-N-281 Monel screw, QQN281 Monel bolt, QQN281 Monel screw | Leave a comment

Titanium for Deep Stagnant Seawater

Posted on October 27, 2021 by Kathleen

Q: I have a deep sea marine application that requires saltwater resistance and tensile strength around 125ksi. In addition to the saltwater and strength parameters, I’m also dealing with waters that can be stagnant. Not sure if that makes a difference. Would Monel K500 be a good choice. A: Monel … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Monel 500 bolts, Monel 500 screws, monel bolts compared to titanium bolts, monel bolts vs titanium bolts, Monel K500 bolts, Monel K500 bolts compared to Titanium Grade 5 Bolts, Monel K500 bolts vs Titanium Grade 5 Bolts, Monel K500 screws, Monel K500 screws compared to Titanium Grade 5 screws, Monel K500 screws vs Titanium Grade 5 screws, monel screws compared to titanium screws, monel screws vs titanium screws, Monel vs titanium bolts, Titanium for stagnant salt water, Titanium for stagnant salt water corrosion, Titanium for stagnant saltwater, Titanium for stagnant saltwater corrosion, Titanium for stagnant sea water, Titanium for stagnant seawater corrosion | Leave a comment

Difference Between Worm Drive and Medium Duty Hose Clamps

Posted on October 26, 2021 by Kathleen

Q: I’m running a process that requires a titanium hose clamp. I need a clamp that won’t damage the hose and provides a reliable seal as we are dealing with toxic chemicals in a very technical application. Is one type of hose clamp better than the other? A: A worm … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged titanium gr 2 hose clamps, titanium grade 2 hose clamps, titanium hose clamps, titanium worm drive hose clamps | Leave a comment

310 Stainless Steel bolts compared to Inconel 600 bolts

Posted on October 15, 2021 by Kathleen

Q: I have a high temperature application that requires bolts that can withstand around 1900F. There is almost no corrosive contamination – strictly heat and oxidation resistance are required. I see both Inconel 600 and 310 stainless can be used at this temperature – what is the difference and which … Continue reading →

Hex Head Bolt Compared to Hex Head Cap Screw

Posted on October 15, 2021 by Kathleen

Q: I’m confused about the difference between a hex head bolt and hex cap screw? Is there a difference? A: Yes these are two different types of fasteners. A hex head bolt is just that: a bolt with a head head. It is typically used when mechanical properties are more … Continue reading →

Posted in Application, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged hex bolt, hex cap screw, hex head bolt, hex head cap screw, polymer hex bolt, polymer hex cap screw, polymer hex head cap screw, polymer hex head screw, specialty metal hex bolt, specialty metal hex head cap screw, specialty metal hex head screw, specialty metal hex screw | Leave a comment

Allen, Hex, and Socket Drivers

Posted on October 11, 2021 by Kathleen

Q: What is the difference between an allen, hex and socket driver? A: All these drivers are the same. They can be offered in a socket head cap screw (hence the term socket), pan head and flat head. An allen/hex/socket drive offers a more secure connection than say a flat … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Engineered Polymer Fasteners, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged allen driver screw, allen head screw, button head socket cap, button head with allen driver, button head with hex driver, flat head socket cap, flat head with allen drive, flat head with hex driver, hex socket screw, pan head with allen driver, pan head with socket driver, socket head cap screw | Leave a comment

Titanium Hose Clamp for Chlorine Water Vapor

Posted on October 6, 2021 by Kathleen

Q: I’m looking for a clamp for a drinking water tank vent screen. We work with many tanks but this tank apparently has a higher chlorine residual so the 304SS worm drive clamps don’t last long. The clamp that we fabricated was a little too stiff so there were gaps … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged grade 2 titanium hose clamps, grade 2 titanium medium duty hose clamp, hose clamps for chlorine resistance, medium duty titanium hose clamp, titanium grade 2 hose clamps, titanium hose clamp for chlorine, titanium hose clamps, titanium medium duty hose clamp | Leave a comment

Inconel 600 Bolts Compared to Ceramics in High Temperatures

Posted on October 5, 2021 by Kathleen

Q: I have a high temperature application that runs at about 1900- 2000F. Would a ceramic bolt be a good idea. I need to have some strength and Alumina says it offers 75 ksi UTS? Will that work? A: Ceramics are not often a good idea when their are any … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Inconel bolts compared to Ceramic Bolts, Inconel Bolts Compared to Ceramics in High Temperatures, Inconel bolts vs Ceramic Bolts, Inconel screws compared to Ceramic screws, Inconel Screws Compared to Ceramics in High Temperatures, Inconel screws vs Ceramic screws | Leave a comment

17-4PH Bolts per ASTM A564, Type 630

Posted on October 5, 2021 by Kathleen

Q: I have a question on 17-4PH H1150, do you know what the tolerance on the material strength is? Ie +/- 10% ? A: For a 17-4 H1150 bolt, we would use the ASTM A564, Type 630 spec to define the strength as 115 KSI Min Tensile, 105 KSI Min … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged 17-4PH bolt per ASTM A564, 17-4PH bolts per ASTM A564, 17-4PH fasteners per ASTM A564, 17-4PH per ASTM A564, 17-4PH screw per ASTM A564, 17-4PH screws per ASTM A564, ASTM A564, Type 630, Type 630 strength | Leave a comment

Making the Right Choice: Inconel 600, 601, 625 & 718

Posted on October 4, 2021 by Kathleen

Inconel bolts are a nickel alloy fastener that are known for their use in high temperature applications that also require high strength. Many grades are also used for their excellent level of corrosion resistance in harsh chemical environments. This brief newsletter highlights the unique attributes of each Inconel bolt … Continue reading →

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Hastelloy C276 vs Inconel 625 Bolts

Posted on October 4, 2021 by Kathleen

Q: What’s the difference between Hastelloy C276 and Inconel 625? A: C276 bolts have an edge in corrosion resistance on Inconel 625 bolts. Typically Hastelloy bolts are the go-to in many harsh chemical environments and offer improved resistance most notably in hydrochloric acid. Hastelloy is also renowned for their resistance … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Hastelloy bolts compared to Inconel bolts, Hastelloy bolts vs Inconel bolts, Hastelloy C276 bolts compared to Inconel 625 bolts, Hastelloy C276 bolts vs. Inconel 625 bolts, Hastelloy C276 compared to Inconel 625, Hastelloy C276 screws compared to Inconel 625 screws, Hastelloy C276 screws vs. Inconel 625 screws, Hastelloy C276 vs. Inconel 625, Hastelloy compared to Inconel, Hastelloy fasteners compared to Inconel fasteners, Hastelloy fasteners vs. Inconel fasteners, Hastelloy screws compared to Inconel screws, Hastelloy screws vs Inconel screws, Hastelloy vs Inconel | Leave a comment

Nylon vs All Metal Lock Nuts

Posted on September 28, 2021 by Kathleen

Q: What is the difference between a Duplex nylon insert and all-metal lock nut? I’ll be using this in an offshore marine application for salt air resistance and strength. A: The main things to consider between an all metal and nylon insert lock nut is the temperature and the corrosive … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged All metal lock nuts, all metal locknuts, duplex all metal lock nuts, Duplex all metal locknuts, duplex lock nuts, Duplex locknuts, duplex nylon insert lock nuts, duplex nylon insert locknuts, duplex polymer insert lock nuts, Flexloc, flexloc lock nuts, flexloc locknuts, Lock nuts, Locknuts, Nylon insert lock nuts, nylon insert locknuts, stover lock nuts | Leave a comment

NAS, and MS parts – What do these mean?

Posted on September 27, 2021 by Kathleen

Q: My customer is requesting NAS and MS part numbers. What do they stand for and why are they important? A: NAS parts are National Aerospace Standards. NAS parts are best known for their precision and high strength. They come in all types of screws, nuts, rivets, rod end bearings, … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged Mil Spec Bolts, Mil Spec Fasteners, Mil Spec Screws, MS Bolts, MS fasteners, MS screws, NAS bolts, NAS fasteners, NAS screws | Leave a comment

Alternative Material to Aluminum 7075

Posted on September 22, 2021 by Kathleen

Q: Can you suggest a different material with similar strength-to-weight ratio as the 7075, that can be produced with a diameter M3-0.5? A: Since an M3 bolt is too small to be produced from Aluminum 7075, I would suggest either grade 2 titanium bolts or grade 5 titanium bolts. For … Continue reading →

Inconel Bolts: Preventing Galling/Seize & Over-Torque

Posted on August 4, 2021 by Kathleen

Q: I need an Inconel 625 screw for a high temperature environment with trace corrosives. I’d need torx head bolt style. How many times can I tighten and loosen this type of bolt before I need to replace it? A: You should be able to get hundreds or even thousands of … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Anti-Seize Lubricant for galling, Anti-Seize Lubricant for Inconel, Anti-Seize Lubricant for Inconel 625, Anti-Seize Lubricant for inconel bolt, Anti-Seize Lubricant for inconel bolts, Anti-Seize Lubricant for inconel screw, Anti-Seize Lubricant for inconel screws, Anti-Seize Lubricant to lower friction, Anti-Seize Lubricant to prevent galling, Anti-Seize Lubricant to prevent seize, Inconel 625 torque chart, Inconel 625 torque specifications, inconel torque chart, Inconel torque specifications, inconel torque specs | Leave a comment

Dowel Pin Tolerances

Posted on July 28, 2021 by Kathleen

Q: I am looking to purchase dowel pins but are there standard tolerances? A: Yes, tolerances for standard inch size dowel pins would be per the ANSI B18. 8.2 spec. They have a diameter tolerance of -0.00 / +0.0002 and length tolerance of +/-0.010. If different tolerances are required then you would want to … Continue reading →

Posted in FAQs, Material, Specialty Metal Fasteners | Tagged ANSI B18. 8.2 spec, Dowel Pin per ANSI B18. 8.2 spec, Dowel Pin Tolerance per ANSI B18. 8.2 spec, Dowel Pin Tolerances, Dowel Pin Tolerances per ANSI B18. 8.2 spec, Standard Tolerance for Dowel Pin, Standard Tolerance for Dowel Pins | Leave a comment

A286 Bolts and Alloy 330 Bolts for Cyclic High Temperatures

Posted on July 27, 2021 by Kathleen

Q: I need some suggestions on bolting for an application that is running at 610 degree C in a thermal cycling environment (Room temperature to 610 deg C). Is A286 a good fit? A: This will depend a bit on the loads you are dealing with, but one of the … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 bolt for cyclic conditions, A286 bolt for cyclic temperatures, A286 bolt for furnace application, A286 boltfor cyclic conditions, A286 bolts for cyclic conditions, A286 bolts for cyclic temperatures, A286 bolts for furnace application, A286 screw for cyclic conditions, A286 screw for cyclic temperatures, A286 screw for furnace application, A286 screws for cyclic conditions, A286 screws for cyclic temperatures, A286 screws for furnace application, Alloy 330 bolt for cyclic conditions, Alloy 330 bolt for cyclic temperatures, Alloy 330 bolt for furnace application, Alloy 330 bolts for cyclic conditions, alloy 330 bolts for cyclic temperatures, Alloy 330 bolts for furnace application, Alloy 330 screw for cyclic conditions, Alloy 330 screw for furnace application, Alloy 330 screws for cyclic conditions, Alloy 330 screws for cyclic temperatures, Alloy 330 screws for furnace application | Leave a comment

Flat Head Screws – What angles are standard?

Posted on July 19, 2021 by Kathleen

Q: I have a customer who is looking for some Inconel flat head screws and specifically called out 100°. Is this the standard? A: Flat head screws, also known as countersunk screws, are able to be manufactured with 6 different angles – 60°, 82°, 90°, 100°, 110° and 120°. The most … Continue reading →

Posted in Advanced Ceramic Fasteners, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged c276 flat head screws, duplex flat head screws, flat head screws, hastelloy flat head screws, inconel flat head screws, peek flat head screws, specialty material flat head screws | Leave a comment

Heat Treatment Options for 17-4PH Steel Bolts

Posted on July 15, 2021 by Kathleen

Q: I have a customer asking me for 17-4PH stainless, but says they need it heat treated to H1100. What does this mean? A: 17-4PH bolts are available in many different heat treatment options. This means that different heat treatments such as H1150, H1100, H1075, etc are applied to the … Continue reading →

Screw Creep at Elevated Temps – Inconel 600?

Posted on July 14, 2021 by Kathleen

Q: I am currently using 18-8 stainless steel socket head cap screws coated with MoS2 in a vacuum. I am having problems with the screws clamping force is sometimes loosening and they sometimes gall and jam, due to elevated temperature (700° to 1000° C) and heat cycling. What would be the most cost-effective screw … Continue reading →

Coating Duplex Bolts for Sea Water – Is this needed?

Posted on July 14, 2021 by Kathleen

Q: We would like to purchase Duplex parts. Can you xylan coat and Zinc nickel Electroplate them since they will be used in sea water? A: It is not practical to coat a Duplex 2507 bolt as it is stainless steel and will not corrode in seawater. Duplex will provide great resistance to saltwater, … Continue reading →

Inconel 718 compared to A286 for High Temperature Strength

Posted on July 7, 2021 by Kathleen

Q: We are currently using A286 bolts per ASTM 453 at 1200F and are having some issues with durability as the tensile strength we originally calculated necessary was 130ksi but seems like we need higher strengths. Any ideas? A: In this type of environment you should consider A-286 in the … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 ASTM 453 bolt, A286 ASTM 453 bolts, A286 ASTM 453 screw, A286 ASTM 453 screws, A286 bolts compared to Inconel 718 bolts, A286 bolts compared to Inconel bolts, A286 cold-worked bolt, A286 cold-worked bolts, A286 cold-worked screw, A286 cold-worked screws, A286 screws compared to Inconel 718 screws, A286 screws compared to Inconel screws, Inconel 718 bolts compared to A286 bolts, Inconel 718 screws compared to A286 screws, Inconel bolts compared to A286 bolts, Inconel compared to A286, Inconel screws compared to A286 screws | Leave a comment

Fastener Thread Class – 2A and 3A Threads, What’s the Difference?

Posted on July 7, 2021 by Kathleen

Q: My customer called out a 3a thread for their hex head screws. Is this different from a 2a thread pitch? A: Yes these are 3 different classes of fit for external inch series threads for studs, bolts, and screws 1A, 2A and 3A. 2A thread class is a medium fit, whereas … Continue reading →

Posted in FAQs, Material, Specialty Metal Fasteners | Tagged Difference between 2A and 3A threads, Difference between thread classes, Thread class differences, Thread class fit 1A, Thread class fit 2A, Thread class fit 3A, Thread classes | Leave a comment

The difference between CL1 and CL2 in 316 B8M material.

Posted on June 30, 2021 by Kathleen

Q: I have a customer who needs 316 Stainless Steel B8M bolts. Would Class 1 or Class 2 have a higher strength? A: If a higher strength is needed you would want to use Class 2. B8M Class 2 is carbide solution treated and strain hardened whereas Class 1 is … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged 316 SS Class 1 vs Class 2, 316 Stainless Class 1 vs Class 2, 316 stainless steel class 1 vs 2, 316 stainless steel class 1 vs class 2, 316SS Class 1 vs 2, Comparing 316 Class 1 vs Class 2, Comparing 316 Stainless class 1 vs class 2 | Leave a comment

Inconel Flange for High Temperature Furnace

Posted on June 29, 2021 by Kathleen

Q: I was wondering if it would be okay to use the Tantalum material in a furnace with design temperature of 2600F. It is a heat treating furnace and I need a 4″ 150 ANSI RF flange. A: Generally due to its extremely high price, tantalum is produced as weld overlay … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Inconel flange for furnace, Inconel flange for high temperature, Inconel flange for high temperature furnace, Inconel flange for high temps, Inconel flange for hot oxygen environment | Leave a comment

Difference Between Hex Bolts & Hex Head Cap Screws

Posted on June 29, 2021 by Kathleen

Hex Cap Screws and Hex Bolts – Are they the same? While most think these parts are the same, they do have some slight differences. Hex head cap screws have a flat washer facing under the head that meet specific tolerances per ASME B18.2.1 whereas a Hex Bolt is flat … Continue reading →

Posted in Advanced Ceramic Fasteners, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged Hex bolt vs hex cap screw, hex cap screw vs hex bolt, hex head bolt vs hex cap screw, hex head cap screw vs hex bolt | Leave a comment

UNJF vs UNF Threads – What is the difference?

Posted on June 28, 2021 by Kathleen

Q: I have a customer requesting a UNJF thread for his Aerospace application. How are these different from a UNF thread? A: This is a great question as UNJ threaded bolts are not interchangeable with a standard UN, UNC, or UNF nut. An internal UNJ thread will assemble to a standard … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged UNF bolt threads, UNF screw threads, UNF threads, UNF vs UNJF fastener threads, UNJF bolt threads, UNJF compared to UNF threads, UNJF screw threads, UNJF Threads, UNJF vs UNF fastener threads, UNJF vs UNF threads | Leave a comment

Comparing the Titanium Grades 2, 5, 7 and 12

Posted on June 23, 2021 by Kathleen

Q: I’m working on a project that is using Titanium bolts for our equipment and we are considering a few different sizes and grade bolts; we are considering Gr.2, Gr.5, Gr.7 and Gr.12. What would you typically specify as the maximum tensile allowable (i.e. 2/3*yield) and the maximum shear allowable … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged 5, 7 and 12, Comparing titanium grade 2 and 5 bolts, Comparing titanium grade 2 and 5 fasteners, Comparing titanium grade 2 and 5 screw, Comparing titanium grade 2 and 5 screws, Comparing titanium grades 2, Difference between titanium grades, Most corrosion resistant grade of titnaium, most corrosion resistant titanium, most economic titanium, Most economical grade of titanium, Strongest grade fo titnaium, strongest titanium | Leave a comment

Studs: First to First Thread vs. Overall Length

Posted on June 23, 2021 by Kathleen

Q: My customer asked for a Hastelloy stud that is threaded first to first. Is this important? A: This is a very important detail. There are 2 options for threads on studs. 1) First to First and 2) Overall Length (or physical end to other physical end). “First to … Continue reading →

Posted in Advanced Ceramic Fasteners, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged End to end stud, First to first stud, Hastelloy Stud, Nickel Alloy Stud, Overall length stud, Specialty Material Stud | Leave a comment

Alloy 330 Bolts for Heat Treatment Racks & Age Furnace

Posted on June 22, 2021 by Kathleen

Q: Would you be able to quote fasteners, that will used to bolt together multi-piece heat treat racks cast from HX. The racks are used in both solution (water quench and polymer quench) and age furnaces. Our typical temperature range during heat treat cycles is 1300-1800°F but can be as … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy 330 bolt for age furnace, Alloy 330 bolt for heat treatment rack, Alloy 330 bolt for high temperaturefurnace, Alloy 330 bolts for age furnace, Alloy 330 bolts for heat treatment rack, Alloy 330 bolts for high temperaturefurnace, Alloy 330 screw for age furnace, Alloy 330 screw for heat treatment rack, Alloy 330 screw for high temperaturefurnace, Alloy 330 screws for age furnace, Alloy 330 screws for heat treatment rack, Alloy 330 screws for high temperaturefurnace | Leave a comment

Difference Between a DIN 6912 & DIN 912 Socket Head Cap Screw

Posted on June 18, 2021 by Kathleen

Q: I have a request for a titanium socket head cap screw. The customer asked to have this screw made to DIN specifications but I found two DIN specs for a socket head cap screw. What is the difference between DIN 6912 and 912? A: A titanium DIN 6912 socket … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Engineered Polymer Fasteners, FAQs, Material, Specialty Metal Fasteners | Tagged DIN 6912 compared to DIN 912, DIN 912 compared to DIN 6912, DIN6912 compared to DIN912, DIN912 compared to DIN6912 | Leave a comment

The difference between MIL-DTL-1222 and MIL-S-1222

Posted on June 18, 2021 by Kathleen

Q: I have a customer who requested a Hastelloy bolt per MIL-DTL-1222. Is this something you can produce? A: Yes we can produce to this spec but first you should know that MIL-S-1222 has been superseded by MIL-DTL-1222. A Hastelloy bolt per MIL-DTL-1222 will cover MIL-S-1222 but the reverse is … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Difference betweeen MIL-DTL-1222 and MIL-S-1222, Hastelloy MIL-DTL-1222 Bolt, Hastelloy MIL-DTL-1222 Bolts, Hastelloy MIL-DTL-1222 screw, Hastelloy MIL-DTL-1222 screws, Hastelloy MIL-S-1222 bolt, Hastelloy MIL-S-1222 fastener, Hastelloy MIL-S-1222 nut, Hastelloy MIL-S-1222 screw, MIL-DTL-1222 Bolt, MIL-DTL-1222 Bolts, MIL-DTL-1222 compared to MIL-S-1222, MIL-DTL-1222 fastener, MIL-DTL-1222 fasteners, MIL-DTL-1222 nut, MIL-DTL-1222 nuts, MIL-DTL-1222 screw, MIL-DTL-1222 screws, MIL-S-1222 bolt, MIL-S-1222 bolts, MIL-S-1222 compared to MIL-DTL-1222, MIL-S-1222 fastener, MIL-S-1222 fasteners, MIL-S-1222 nut, MIL-S-1222 nuts, MIL-S-1222 screw, MIL-S-1222 screws | Leave a comment

Titanium Bolts & Galvanic Corrosion in Automobile

Posted on June 16, 2021 by Kathleen

Q: I’m using metric Grade 5 titanium bolts, washers and nuts for automotive application. Since the car will never be exposed to any salt water environments do I need to worry about galvanic corrosion? A: Galvanic corrosion is really only a problem if you have a liquid medium between the … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Titanium bolt for automotive application, Titanium bolt galvanic corrosion, Titanium bolts for automotive application, Titanium bolts galvanic corrosion, Titanium fastener galvanic corrosion, Titanium fastener or automotive application, Titanium fasteners for automotive application, Titanium fasteners galvanic corrosion, Titanium screw for automotive application, Titanium screw galvanic corrosion, Titanium screws for automotive application, titanium screws galvanic corrosion | Leave a comment

Inconel 600 or 601 Bolts For High Temperatures?

Posted on May 26, 2021 by Kathleen

Q: For a high temperature oxidation-rich environment which would be better Inconel 600 or 601 bolts? A: For this situation it really depends on the temperature range you are dealing with because both an Inconel 600 bolt and an Inconel 601 bolt offer good oxidation resistance. Inconel 600 can service … Continue reading →

Titanium Gr 5 Bolts vs Super Duplex 2507 Bolts in Brackish Marine Environment

Posted on May 26, 2021 by Kathleen

Q: I’m dealing with a brackish marine environment where fresh and salt water combine. I need a strong bolt around 120ksi of tensile strength and have been using Titanium Grade 5, but they are quite expensive. I was wondering if there is a more economic alternative that can handle this … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Super duplex bolt for brackish water, Super duplex bolt for marine environment, Super duplex bolt for strength in marine environment, Super duplex bolt for strength in salt water, Super duplex bolt for strength in saltwater, Super duplex bolts for brackish water, Super duplex bolts for marine environment, Super duplex bolts for strength in marine environment, Super duplex bolts for strength in salt water, Super duplex bolts for strength in saltwater, Super duplex screw for brackish water, Super duplex screw for marine environment, Super duplex screw for strength in marine environment, Super duplex screw for strength in salt water, Super duplex screw for strength in saltwater, Super duplex screws for brackish water, Super duplex screws for strength in marine environment, Super duplex screws for strength in salt water, Super duplex screws for strength in saltwater | Leave a comment

A286 Bolts for Improvement Over Grade 8 in Fuel Application

Posted on May 21, 2021 by Kathleen

Q: I’m working with a high temperature waste to fuel application that operates at 1000F normally but could spike to 1200F. Currently I am using Grade 8 bolts but I am concerned about the oxidation resistance of them and their stability at high temperatures. Do you have any material recommendations? … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 bolt for fuel application, A286 bolt for high temperature, A286 bolt for oxidation resistance, A286 bolt high temperature waste, A286 bolts for fuel application, A286 bolts for high temperature, A286 bolts for oxidation resistance, A286 bolts high temperature waste, A286 screw for fuel application, A286 screw for high temperature, A286 screw for oxidation resistance, A286 screw high temperature waste, A286 screws for fuel application, A286 screws for high temperature, A286 screws for oxidation resistance, A286 screws high temperature waste | Leave a comment

Titanium Gr5 verse Aluminum 7075

Posted on May 21, 2021 by Kathleen

Q: How does titanium compare to Aluminum 7075 in terms of strength and density. I need a really strong material with a low strength to weight ratio. A: A titanium bolt will be more dense than an Aluminum 7075 bolt with a density of 4.51 g /cm3 compared to 2.81 … Continue reading →

Posted in Application, FAQs, High Strength, Lightweight, Material, Specialty Metal Fasteners | Tagged Aluminum 7075 bolt strength and density, Aluminum 7075 bolts strength and density, Aluminum 7075 screw strength and density, Aluminum 7075 screws strength and density, Titanium bolt compared to Aluminum 7075 bolt, Titanium bolt vs Aluminum 7075 bolt, Titanium bolts compared to Aluminum 7075 bolts, Titanium bolts vs Aluminum 7075 bolts, Titanium screw compared to Aluminum 7075 screw, Titanium screw vs Aluminum 7075 screw, Titanium screws compared to Aluminum 7075 screws, Titanium screws vs Aluminum 7075 screws | Leave a comment

Titanium, Monel & Hastelloy for 100% Salt-Saturated Brine Water

Posted on May 21, 2021 by Kathleen

Q: I am dealing with near 100% salt saturated brine water @ 195°F. I need material recommendations and price on threaded rod that will survive in that environment. A: Hello, with 100% saturated brine at near boiling temperatures of 195F there are a few materials that can work . Bolts … Continue reading →

Hastelloy & MR0175

Posted on May 18, 2021 by Kathleen

Q: I work on oil rig repair and we are required to have Hastelloy bolts that meet the NACE MR0175 standard. What is this exactly, and do you offer these? A: To answer the easy question, yes we offer Hastelloy screws per NACE MR0175. Now for the my involved question. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Hastelloy bolt per NACE MR0175, Hastelloy bolt per NACE MR0175 Hastelloy bolts per NACE MR0175, Hastelloy screw per NACE MR0175, Hastelloy screws per NACE MR0175, NACE MR0175 Hastelloy Bolt, NACE MR0175 Hastelloy Bolts, NACE MR0175 Hastelloy Screw, NACE MR0175 Hastelloy Screws | Leave a comment

Titanium Gr5 versus Monel K500 Bolts in Sea Water

Posted on May 18, 2021 by Kathleen

Q: I have a subsea application that is exposed to extremely rapid moving salt water. Not only is it faced with these corrosive conditions but it must also be strong – 150 ksi tensile strength – in order to withstand these rough waters and maintain the structure’s integrity. Can you … Continue reading →

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A286 ASTM F2281 for Temperatures up to 1800°F

Posted on May 14, 2021 by Kathleen

Q: I’m a purchasing agent and one of our engineers is requesting a 1/2″-13 x 2″ hex head bolt that is material A286 meeting F2281? What is F2281 mean? A: Good question. F2281 is a national standards specification put in place by the ASTM. An A286 bolt that meets the … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 ASTM F2281 bolt for high temperature, A286 ASTM F2281 bolts for high temperatures, A286 ASTM F2281 for high temperatures, A286 ASTM F2281 screw for high temperature, A286 ASTM F2281 screws for high temperature, F2281 bolt standard, F2281 bolts standard, F2281 screw standard, F2281 screws standard | Leave a comment

Inconel 625 for Oxidation Resistance and Acid Contamination

Posted on May 14, 2021 by Kathleen

Q: I have a process that is running at high temperatures that can fluctuate up to 1500F that requires not only oxidation resistance but also some chemical resistance contaminants. I had tried some C276 bolts for the stray acids but they don’t seem to be working mechanically…suggestions? A: A good … Continue reading →

Nickel 200 Compared to Hastelloy for Caustic Solution

Posted on May 14, 2021 by Kathleen

Q: I have a process utilizing a high concentration caustic solution of sodium hydroxide. Would C276 bolts be a good option for corrosion resistance. A: They could be a possibility but you might want to also consider Nickel 200. Nickel 200 bolts find their niche in corrosion resistance to caustic … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Nickel 200 bolt compare Hastelloy bolt for caustic soda, Nickel 200 bolt for caustic alkaline solutions, Nickel 200 bolt for sodium hydroxide, Nickel 200 bolts compare Hastelloy bolts for caustic soda, Nickel 200 bolts for caustic alkaline solutions, nickel 200 bolts for sodium hydroxide, Nickel 200 compare Hastelloy for caustic soda, Nickel 200 screw compare Hastelloy screw for caustic soda, Nickel 200 screw for caustic alkaline solutions, Nickel 200 screw for sodium hydroxide, Nickel 200 screws for caustic alkaline solutions, nickel 200 screws for sodium hydroxide, Nickel 200 vs Hastelloy for caustic soda | Leave a comment

17-4PH for High Strength Structural Application

Posted on May 13, 2021 by Kathleen

Q: We are in the planning process for a structure that must withstand 160 to 165 ksi of tensile strength. Do you have any suggestions on bolting material? A: An ideal bolt for this application would be a 17-4PH bolt. 17-4PH is a material that is over 4 times greater … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged 17-4PH Bolt for High Strength Structural Application, 17-4PH Bolt for Structural Strength, 17-4PH Bolts for High Strength Structural Application, 17-4PH Bolts for Structural Strength, 17-4PH for High Strength Structural Application, 17-4PH Screw for High Strength Structural Application, 17-4PH screw for Structural Strength, 17-4PH screws for High Strength Structural Application, 17-4PH screws for Structural Strength | Leave a comment

17-4PH Screw for Strength Comparable to Grade 8 Steel

Posted on May 13, 2021 by Kathleen

Q: Perhaps you can help. I am looking for a stainless-steel substitute to replace a standard SHCS. I will be fastening a stack of hydraulic valves onto a 6061-aluminum manifold with a 3000 PSI working pressure. I am not sure what the tensile strength needs to be comparable to a … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged 17-4PH Bolt for High Pressure Strength, 17-4PH Bolt for Strength Comparable to Grade 8 Steel, 17-4PH Bolts for High Pressure Strength, 17-4PH Bolts for Strength Comparable to Grade 8 Steel, 17-4PH for High Pressure Strength, 17-4PH Screw for High Pressure Strength, 17-4PH Screw for Strength Comparable to Grade 8 Steel, 17-4PH Screws for High Pressure Strength, 17-4PH Screws for Strength Comparable to Grade 8 Steel | Leave a comment

Hastelloy for Formic Acid

Posted on May 12, 2021 by Kathleen

Q: We are a producer of a preservative agent for livestock feed. Our process requires the use of formic acid. Any suggestions on an anti-corrosive bolt that can handle this acid? A: For formic acid I would typically suggest Hastelloy C276 or Hastelloy C22 but it always depends on concentration … Continue reading →

A286 Bolts for High Temperature use with 409 Stainless

Posted on May 12, 2021 by Kathleen

Q: I am working on two different exhaust systems based on 409 SS. I am looking for a 3/8-16 1” long bolt which can be fastened to threads in 409 SS. Currently, I am using Grade 8 bolts made from 300 M with Nickel Based Anti-Seize. The temperature can go … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 Bolt for 500C, A286 Bolt for use with 409 SS, A286 Bolt for use with 409 stainless steel, A286 Bolts for 500C, A286 Bolts for use with 409 SS, A286 Bolts for use with 409 stainless steel, A286 screw for 500C, A286 screw for use with 409 SS, A286 screw for use with 409 stainless steel, A286 screws for 500C, A286 screws for use with 409 SS, A286 screws for use with 409 stainless steel, High Temperature Bolt for use with 409 SS, High Temperature Bolts for use with 409 SS, High Temperature screw for use with 409 SS, High Temperature screws for use with 409 SS | Leave a comment

Inconel Bolt for High Temperature Thermal Expansion

Posted on May 12, 2021 by Kathleen

Q: I am looking for a bolt that will withstand working temperatures of around 800 degrees. We are having issues using grade 9 bolts that after multiple oven cycles we are having to cut the bolts off due to them being locked up. We need a bolt that will withstand … Continue reading →

Monel Bolt for Anodizing

Posted on May 10, 2021 by Kathleen

Q:We have an anodizing process that sends low voltage current through aluminum bars. We have been using 316 stainless bolts, but over time the electricity heats the bolts up red hot, then we lose clamping force. The tanks contain a solution of 15% sulfuric acid, so there is some corrosion … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners | Tagged Monel Bolt for Anodizing, Monel Bolt for conductivity, Monel Bolts for Anodizing, Monel Bolts for conductivity, Monel Screw for Anodizing, Monel screw for conductivity, Monel Screws for Anodizing, Monel screws for conductivity | Leave a comment

Inconel Bolts & Alloy 330 Bolts for Cyclic High Temperature Conditions

Posted on May 5, 2021 by Kathleen

Q: I need a material that can stay oxidation resistant at 2000F in a cyclic temperature environment. Any suggestions? A: One of the best choices is Inconel 601, UNS N06601,which is highly resistant to oxidation up to 2200°F and can handle even severe thermal cycling. These Inconel bolts will offer … Continue reading →

DIN 912 / ASTM A1082 / Super Duplex

Posted on May 5, 2021 by Kathleen

Q: My customer is asking me to find them a Super Duplex bolt that meets DIN 912 and ASTM A1082. What does this mean and can you help out with this request. A: Yes, we can definitely help you with this request. Super Duplex is the type of material. The … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged ASTM A1082 bolt, ASTM A1082 bolts, ASTM A1082 fastener, ASTM A1082 fasteners, ASTM A1082 screw, ASTM A1082 screws, DIN 912 Duplex 2205 Socket Head Cap Screw, DIN 912 Duplex Socket Head Cap Screw, DIN 912 Duplex Steel Socket Head Cap Screw, DIN 912 Socket Head Cap Screw, DIN 912 Super Duplex Socket Head Cap Screw, DIN 912 Super Duplex Steel Socket Head Cap Screw, Duplex ASTM A1082 bolt, Duplex ASTM A1082 bolts, Duplex ASTM A1082 fasteners, Duplex ASTM A1082 screw, Duplex ASTM A1082 screws, Super Duplex ASTM A1082 bolt, Super Duplex ASTM A1082 bolts, Super Duplex ASTM A1082 fasteners, Super Duplex ASTM A1082 screw, Super Duplex ASTM A1082 screws | Leave a comment

Titanium Grade 23 or TI 6AL-4V for Biocompatibility

Posted on May 3, 2021 by Kathleen

Q: I’m working on a medical prototype that requires a strong bolt that is biocompatible. I know I want titanium but not sure which grade is adequate for medical use. A: Typically medical grade titanium screws are produced from grade 23 or TI 6AL-4V ELI or grade 5 6AL4V. A … Continue reading →

Posted in Application, FAQs, High Strength, Lightweight, Specialty Metal Fasteners | Tagged 6AL4V bolt, 6AL4V bolts, 6AL4V screw, 6AL4V screws, Grade 23 titanium bolt for medical, Grade 23 titanium bolts for medical, Grade 23 titanium screw for medical, Grade 23 titanium screws for medical, Grade 5 titanium bolt for medical, Grade 5 titanium bolts for medical, Grade 5 titanium screw for medical, Grade 5 titanium screws for medical, Medical grade titanium bolt, Medical grade titanium bolts, Medical grade titanium screw, Medical grade titanium screws, TI 6AL-4V ELI bolt, TI 6AL-4V ELI bolts, TI 6AL-4V ELI screw, TI 6AL-4V ELI screws | Leave a comment

Alloy 20 vs Duplex Zeron 100 Bolts

Posted on May 3, 2021 by Kathleen

Q: I was thinking of ordering some Duplex Zeron 100 bolts for some mild sulfuric acid. How does that compare to Alloy 20? My alloy 20 bolts are suffering some mild corrosion. A: Zeron bolts do offer a higher level of general resistance to corrosive environments compared to grades 2205 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 20 bolt for sulfuric acid, Alloy 20 bolts for sulfuric acid, Alloy 20 screw for sulfuric acid, C276 bolt for sulfuric acid, C276 bolts for sulfuric acid, C276 screw for sulfuric acid, C276 screws for sulfuric acid, Duplex bolt for acid corrosion, Duplex bolts for acid corrosion, Duplex screw for acid corrosion, Duplex screws for acid corrosion, Duplex Zeron bolt for acid corrosion, Duplex Zeron bolts for acid corrosion, Duplex Zeron screw for acid corrosion, Duplex Zeron screws for acid corrosion, Hastelloy bolt for sulfuric acid, Hastelloy bolts for sulfuric acid, hastelloy screw for sulfuric acid, hastelloy screws for sulfuric acid | Leave a comment

A286 Protection From High Temperatures or Corrosive Conditions?

Posted on May 3, 2021 by Kathleen

Q: I have an high temperature exhaust application that requires about 130ksi of tensile strength and is running pretty hot at 1000F. There are also some low concentration acidic contaminants that condense on the bolts during shutdowns, that have caused corrosion in the past on standard 316 bolting. Would A286 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged A286 bolt compared to 316 for corrosion, A286 bolt for oxidation corrosion, A286 bolt for oxidation resistance, A286 bolts compared to 316 for corrosion, A286 bolts for oxidation corrosion, A286 bolts for oxidation resistance, A286 compared to 316 for corrosion, A286 for oxidation corrosion, A286 for oxidation resistance, A286 screw compared to 316 for corrosion, A286 screw for oxidation corrosion, A286 screw for oxidation resistance, A286 screws compared to 316 for corrosion, A286 screws for oxidation corrosion, A286 screws for oxidation resistance | Leave a comment

Alloy 20 Bolts for Oxalic Acid

Posted on April 29, 2021 by Kathleen

Q: Please recommend a material for use in 80 deg C oxalic acid solution. The titanium I’m using suffers, and dissolves. My hope is that C276 may work. We do not need high mechanical strength. I’m looking to order M4 and M6 socket head cap screws. A: Probably the best … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged alloy 20 bolt for oxalic acid, alloy 20 bolts for oxalic acid, Alloy 20 for oxalic acid, Alloy 20 screw for oxalic acid, Alloy 20 screws for oxalic acid | Leave a comment

Duplex Bolts versus 304 /316 Stainless Steel

Posted on April 29, 2021 by Kathleen

Q: How does a Duplex screw compare to a stainless steel 300 series fastener? Would they be better in a saltwater environment? A: A Duplex stainless steel screw offers many advantages over 300 series stainless steel. Duplex is offered primarily in two grades Duplex 2205 and Super Duplex 2507 (with … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Duplex compared to 316, Duplex compared to 316 Stainless, Duplex Steel compared 316 Steel, Duplex steel compared to 300 series stainless, Duplex steel compared to 300 series stainless steel, Duplex steel compared to 316 stainless, Duplex Steel compared to 316 Steel, Duplex steel vs 300 series stainless, Duplex steel vs 300 series stainless steel, Duplex steel vs 300 series steel, Duplex steel vs 316 Stainless Steel, Duplex Steel vs 316 Steel, Duplex vs 316, Duplex vs 316 Stainless | Leave a comment

A286 Bolts per ASTM A453 660

Posted on April 16, 2021 by Kathleen

Q: I have a high temperature exhaust stream that is part of an air-to-air energy recovery system that experiences temperatures around 1300F consistently and can go up to 1500 intermittently. I need to ensure that the bolts have a tensile strength of 130ksi. Can you help me out with this? … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged A286 bolt ASTM A453 Grade 660 (A, A286 bolts to ASTM A453 Grade 660 (A, A286 Screw to ASTM A453 Grade 660 (A, A286 Screws to ASTM A453 Grade 660 (A, ASTM A453 Grade 660 (A, B, C or D), C or D) bolt, C or D) bolts, C or D) screw, C or D) screws | Leave a comment

Hastelloy C276 Bolts versus Nickel 200 Bolts

Posted on April 15, 2021 by Kathleen

Q: Because Nickel 200 bolts have much higher nickel content than Hastelloy C276 does that mean they are more corrosion resistant than a Hastelloy bolt? A: No. Though nickel content plays a huge role in corrosion resistance, however there are other elements that contribute to the high level of corrosion … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Hastelloy bolt vs Nickel 200 bolt, Hastelloy bolts vs Nickel 200 bolts, Hastelloy screw vs Nickel 200 screw, Hastelloy screws vs Nickel 200 screws, Nickel 200 bolt, Nickel 200 bolt for caustic alkaline solutions, Nickel 200 bolt for caustic soda, Nickel 200 bolts, Nickel 200 bolts for caustic alkaline solutions, Nickel 200 bolts for caustic soda, Nickel 200 screw, Nickel 200 screw for caustic alkaline solutions, Nickel 200 screw for caustic soda, Nickel 200 Screws, Nickel 200 screws for caustic alkaline solutions, Nickel 200 screws for caustic soda | Leave a comment

Titanium Grade 5 versus Aluminum

Posted on April 14, 2021 by Kathleen

Q: What is the difference between using aluminum compared to a titanium bolt for a medical fastener? A: Medical grade titanium bolts – grade 5 – have an incredible strength to weight ratio. They are 60% denser than aluminum but more than twice as strong. This makes a titanium bolt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged medical titanium bolt, medical titanium bolts, medical titanium screws, titanium bolt, titanium bolt for biocompatibility, Titanium Bolts, titanium bolts for biocompatibility, titanium grade 5 bolt, titanium grade 5 bolts, titanium grade 5 screw, titanium grade 5 screws, titanium screw, Titanium Screws, titanium screws for biocompatibility | Leave a comment

Coefficient of Thermal Expansion (CTE): TZM vs Tungsten

Posted on April 14, 2021 by Kathleen

Q: I’m working with a high temperature, bi-metallic bolted flange design. The steady state temperature of the flange is 1400 degrees F. The bolt is TZM, which has a lesser CTE than the thru-hole material. I’m looking for a material with a CTE less than TZM to use as a … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged tungsten bolt for high temperature, tungsten bolt for vacuum, tungsten bolts for high temperature, tungsten bolts for vacuum, tungsten screw for high temperature, tungsten screw for vacuum, tungsten screws for high temperature, tungsten screws for vacuum | Leave a comment

Choosing a Non-Magnetic Fastener

Posted on April 13, 2021 by Kathleen

Non-magnetic fasteners service a variety of applications mainly where magnetic “interference” needs to be avoided. Cryogenic and medical applications such as MRI’s are just a few of the key places non-magnetic fasteners are needed. This newsletter highlights a few specialty metal fasteners that can service non-magnetic needs. Inconel Bolts Non-magnetic … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Lightweight, Material, Specialty Metal Fasteners | Tagged non-magnetic aluminum bolt, non-magnetic aluminum bolts, non-magnetic aluminum screw, non-magnetic aluminum screws, non-magnetic bolt, non-magnetic bolts, non-magnetic Inconel bolt, non-magnetic Inconel bolts, non-magnetic Inconel screw, non-magnetic Inconel screws, non-magnetic metal bolt, non-magnetic metal bolts, non-magnetic metal screw, non-magnetic metal screws, non-magnetic screw, non-magnetic screws, non-magnetic titanium bolt, non-magnetic titanium bolts, non-magnetic titanium screw, non-magnetic titanium screws | Leave a comment

Nitronic 60 vs A286 for High Temperatures

Posted on April 13, 2021 by Kathleen

Q:How does Nitronic 60 compare to an A286 bolt for high temperature strength? A: That depends on the strength required and the temperature of your application. A Nitronic 60 bolt is known for its high temperature properties up to 1800F. At these extreme temperatures it can offer good resistance to … Continue reading →

Super Duplex for Structural Project in Salt Air

Posted on April 12, 2021 by Kathleen

Q: I’m looking for a bolt that can handle salt air and be structurally sound with a tensile strength of about 115-120 ksi max – do I require a titanium grade 5 bolt because I know they are costly? A: Probably not at that tensile strength. A Super Duplex bolt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Super duplex bolt for salt air, Super Duplex bolt for saltwater, Super duplex bolts for salt air, Super Duplex bolts for saltwater, Super duplex fastemers for salt air, Super duplex fastener for salt air, Super Duplex fastener for saltwater, Super Duplex fasteners for saltwater, Super duplex screw for salt air, Super Duplex screw for saltwater, Super duplex screws for salt air, Super Duplex screws for saltwater | Leave a comment

Titanium Bolts for High Strength Chloride Application

Posted on April 12, 2021 by Kathleen

Q: I have a chlor alkali application that requires high strength of about 110ksi of tensile strength. Heat is not a factor but I’m concerned about the strength. Can you make any recommendations? A: For chlor alkali services one of the best materials is titanium. While a standard titanium grade … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Titanium bolt for chlor alkali, Titanium bolts for chlor alkali, Titanium fastener for chlor alkali, Titanium fasteners for chlor alkali, Titanium grade 5 bolt for chlor alkali, Titanium grade 5 bolts for chlor alkali, Titanium grade 5 fastener for chlor alkali, Titanium grade 5 fasteners for chlor alkali, Titanium grade 5 screw for chlor alkali, Titanium grade 5 screws for chlor alkali, Titanium screw for chlor alkali, Titanium screws for chlor alkali | Leave a comment

A Duplex Bolt vs AL6XN in Saltwater

Posted on April 9, 2021 by Kathleen

Q: How does a Duplex bolt compare to AL6XN in a hot saltwater situation? A: Duplex bolts are ideal for chlorides and mild saltwater application such as brackish water, salt air and moderate temperature unpolluted seawater. An AL6XN bolt will provide more corrosion protection than a Duplex bolt in marine … Continue reading →

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Monel 500 Bolts for Hydrofluosilicic Acid

Posted on April 9, 2021 by Kathleen

Q: What is the best alloy to bolt to use in a flange on the outside Hydrofluosilicic acid storage tank? A: Probably the best materials for Hydrofluosilicic acid bolting would be a Monel K500 bolt. This material will give you the strength and good corrosion resistance to the this very … Continue reading →

Alloy 20 Bolts and Inconel Bolts for Downhole Oil Application

Posted on April 8, 2021 by Kathleen

Q: Hi there! I have a set screw in a downhole Oil and Gas application that is experiencing cam out/stripping and seeking a recommendation for a drop in replacement. With 17-4 and stainless steel, galling is a real issue for us. Also with the application being down-hole, if the screw … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 20 bolt for acid corrosion resistance, Alloy 20 bolt for corrosion resistance, Alloy 20 bolt for mild corrosion resistance, Alloy 20 bolts for acid corrosion resistance, Alloy 20 bolts for corrosion resistance, Alloy 20 screw for acid corrosion resistance, Alloy 20 screw for corrosion resistance, Alloy 20 screws for acid corrosion resistance, Alloy 20 screws for corrosion resistance, Inconel 625 bolt for corrosion resistance, Inconel 625 bolt for high temperature and strength, inconel 625 bolts for corrosion resistance, Inconel 625 bolts for high temperature and strength, inconel 625 screw for corrosion resistance, Inconel 625 screw for high temperature and strength, Inconel 625 screws for corrosion resistance, Inconel 625 screws for high temperature and strength, Inconel bolt for acid resistance, Inconel bolt for corrosion and high temperature, Inconel bolt for high strength, Inconel bolts for acid resistance, Inconel bolts for corrosion and high temperature, Inconel bolts for high strength, Inconel fastener for corrosion and high temperature, Inconel fasteners for corrosion and high temperature, Inconel screw for acid resistance, Inconel screw for corrosion and high temperature, Inconel screw for high strength, Inconel screws for acid resistance, Inconel screws for corrosion and high temperature, Inconel screws for high strength | Leave a comment

An Inconel 600 Bolt vs an Inconel 625 Bolt

Posted on April 8, 2021 by Kathleen

Q: Does Inconel 600 provide the same level of corrosion resistance as an Inconel 625 bolt? A: Not typically. For corrosion resistance, an Inconel 625 bolt is one of the more corrosion resistant versions of the Inconel alloys and it can withstand many strong hot acids. While not as corrosion … Continue reading →

Rolled vs Cut Threads

Posted on April 7, 2021 by Kathleen

Fasteners threads are made by one of two processes. Rolling the threads of the bolt or cutting them. This newsletter will describe each process, as well as the advantages and disadvantages. Rolled Threads This type of thread is made by a forming process where threads are created as the fastener … Continue reading →

Posted in Application, Blog, Material, Specialty Metal Fasteners | Tagged Bolt Cut Threads, Bolt Rolled Threads, Bolts Cut Threads, Bolts Rolled Threads, Cut Thread Bolt, Cut Thread Bolts, Cut Thread Fastener, Cut thread Fasteners, Cut Thread Screw, Cut Thread Screws, Cut Threads, Rolled Thread Bolt, Rolled Thread Bolts, Rolled Thread Fastener, Rolled Thread Fasteners, Rolled Thread Screw, Rolled Thread Screws, Rolled Threads, Screw Cut Threads, Screw Rolled Threads, Screws Cut Threads, Screws Rolled Threads | Leave a comment

Hastelloy C276 Bolts for Hot Acids

Posted on April 7, 2021 by Kathleen

Q: I’m running a laboratory process that will be exposing bolts to a variety of acids. I’d like a metal bolt that can withstand low concentration hot acids. I was thinking a Hastelloy C276 bolt may be a good option. Are there any acids I should beware of that can … Continue reading →

Carburization Resistant Bolts

Posted on April 6, 2021 by Kathleen

Q: It says that Alloy 330 is carburization resistant. What does that mean exactly? A: Carburization is when heat hardens a metal. Carburizing is sometimes used in alloy aging processes when your goal is to harden the alloy. On the other hand unwanted carburization can occur at extreme temperatures which … Continue reading →

Oxidation Resistant A286 and Alloy 330 Bolt

Posted on April 6, 2021 by Kathleen

Q: I was reading that high temperatures will accelerate the rusting of metal bolts. Is there a material that can prevent this. I’m using the screws at 1300F intermittently. A: What you are looking for is an oxidation resistant bolt. When a metal oxidizes it is attacked by oxygen which … Continue reading →

Hastelloy and Inconel Bolts for High Temperature & Low Acidic Environments

Posted on April 1, 2021 by Kathleen

Q:We are currently using mild steel with a black oxide coating and the bolts are breaking down because they are stretching under tension because of the heat, and corrode in various places from our acids.The acids we use here are Hydrochloric (HCl) and Sulfuric (H2SO4), both are heavily diluted with … Continue reading →

Titanium vs Monel 400 for Polluted Stagnant Seawater

Posted on March 31, 2021 by Kathleen

Q: I’ve been using Monel 400 bolts for a coastal operation that is built in polluted, stagnant saltwater. I’m been having some slight corrosion – nothing drastic, but wanted to check if there was another material that would last longer. A: For this situation I would suggest titanium bolts. Titanium … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Monel 400 bolts for saltwater corrosion, Monel 400 bolts for seawater corrosion, Monel 400 fasteners for saltwater corrosion, Monel 400 fasteners for seawater corrosion, Monel 400 screws for saltwater corrosion, Monel 400 screws for seawater corrosion, Monel bolts for saltwater corrosion, Monel bolts for seawater corrosion, monel fasteners for saltwater corrosion, Monel fasteners for seawater corrosion, monel screws for saltwater corrosion, Monel screws for seawater corrosion, titanium bolts for polluted saltwater, titanium bolts for polluted seawater, titanium bolts for saltwater corroion, titanium bolts for seawater corrosion, titanium fasteners for polluted saltwater, titanium fasteners for polluted seawater, titanium fasteners for saltwater corroion, titanium fasteners for seawater corrosion, titanium screws for polluted saltwater, titanium screws for polluted seawater, titanium screws for saltwater corroion, titanium screws for saltwater corrosion, titanium screws for seawater corroion | Leave a comment

Hastelloy C276 vs. Hastelloy C22 Fasteners

Posted on March 25, 2021 by Kathleen

Q: What’s the difference between Hastelloy C276 and Hastelloy C22? A: Hastelloy C276 fasteners offer very good resistance to strong reducing corrosive acids, as well excellent stress corrosion cracking resistance and resistance to localized attack. They are renowned for their corrosion resistance to various concentrated, hot acids and reducing environments, … Continue reading →

Bleach Plant: Titanium vs Hastelloy C276

Posted on February 24, 2021 by Kathleen

Q: We need bolts for a shutdown in our Bleach Plant where Chlorine Dioxide is the attacking agent. Is titanium sufficient or should we be using C276 bolts? A: Titanium bolts are typically more than sufficient. Titanium fasteners are renowned for their resistance to chlorides and chlorines – they are … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Titanium bolts for bleach corrosion, Titanium bolts for bleach plant, Titanium bolts for chlorine dioxide corrosion, titanium fasteners for bleach corrosion, Titanium fasteners for bleach plant, Titanium fasteners for chlorine dioxide corrosion, Titanium screws for bleach corrosion, Titanium screws for bleach plant, Titanium screws for chlorine dioxide corrosion | Leave a comment

Inconel 625 vs Nitronic 60

Posted on February 23, 2021 by Kathleen

Q: Can you explain to me the difference between Inconel 625 and Nitronic 60 in terms of high temperatures? Both seem to be able to handle temps up to 1800F but which is better? A: Well that depends on what you are using them for. Inconel 625 bolts are a … Continue reading →

Oxidation Resistance for Heat Treating

Posted on February 18, 2021 by Kathleen

Q: I am interested in 1/4″ x 2 1/2′ bolts and nuts that can resist oxidation up to 2000F. The application they are needed for would be to hold together a steel frame meant to hold tool steel in position preventing distortion during the heat treating process. I would like … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy 330 bolts for high temperature oxidation resistance, Alloy 330 bolts for oxidation resistance, Alloy 330 fasteners for high temperature oxidation resistance, Alloy 330 fasteners for oxidation resistance, Alloy 330 screws for high temperature oxidation resistance, Alloy 330 screws for oxidation resistance | Leave a comment

Inconel Bolts for High Temperature

Posted on February 8, 2021 by Kathleen

Q: I have an application that needs an alloy to withstand 2100° F with no preload. Would Hastelloy be a good choice? A: Probably not. Hastelloy fasteners have a max usable temperature of 1500°F and is primarily used for corrosion resistance. For these temperatures Inconel bolts are a better choice … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alloy 330 bolts for 2100F, Alloy 330 bolts for high temperatures, Alloy 330 fasteners for 2100F, Alloy 330 fasteners for high temperatures, Alloy 330 screws for 2100F, Alloy 330 screws for high temperatures, Inconel bolts for 2100F, Inconel bolts for high temperatures, Inconel fasteners for 2100F, Inconel fasteners for High Temperatures, Inconel screws for 2100F, Inconel screws for high temperatures | Leave a comment

Alloy 330 vs 310 Stainless Steel Fasteners

Posted on January 22, 2021 by Kathleen

Q: What is the difference between alloy 330SS and 310SS bolts? A: Good question. Alloy 330 and 310 are fairly similar however there are some differences. Alloy 330 fasteners offer high temperature protection, oxidation and carburization resistant to 2100°F whereas 310SS maxes out at 2000°F. In addition, alloy 330 bolts … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy 330 vs 310 Stainless Steel, Alloy 330 vs 310 Stainless Steel bolts, Alloy 330 vs 310 Stainless Steel fasteners, Alloy 330 vs 310 Stainless Steel screws | Leave a comment

Nickel 200 Gaskets for Cyrogenic Applications

Posted on January 15, 2021 by Kathleen

Q:Hi, I’m interested in the JG/JP gasket for a cryogenic application. Can you recommend a material with the highest ductility as I’m concerned about the gasket becoming too brittle? A: To protect your process from loss of ductility, I would suggest using a combination of 316 SS and Graphite for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged cryogenic gaskets, cyro gaskets, gaskets for cryo applications, gaskets for cryogenic applications, nickel 200 gaskets for cryo applications, nickel 200 gaskets for cryogenic applications, nickel gaskets for cryo applications | Leave a comment

Flanges for High Pressure Sulfuric Acid

Posted on December 21, 2020 by Kathleen

Q: I have a high pressure application that exposes my flanges to sulfuric acid? Can you suggest the best flange and material for this situation? A: For high pressure applications weld neck flanges have a beveled end that, when connected to a pipe, creates a trough for a strong weld … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged corrosion resistant weld neck flange, flange for sulfuric acid, hastelloy corrosion resistant flange, hastelloy flange, hastelloy flange for sulfuric acid, Hastelloy weld neck flange, inconel corrosion resistant flange, inconel flange, inconel flange for sulfuric acid, inconel weld neck flange, tantalum corrosion resistant flange, tantalum flange, tantalum flange for sulfuric acid, tantalum weld neck flange, weld neck flange for sulfuric acid, zirconium corrosion resistant flange, zirconium flange, zirconium flange for sulfuric acid, zirconium weld neck flange | Leave a comment

Gaskets that are Problem Solvers for Leaking Flange Joints

Posted on December 21, 2020 by Kathleen

Q: Can you offer advise on a gasket that can help with leaking flange joints? A: If you have a process where you have exhausted all gasket options, try one of Revoseal’s gaskets in high temperature and pressure piping systems. Most issues with older piping systems that will no longer … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged GAskets for leaking flange joints, gaskets for leaking flanges, gaskets for leaking joints, gaskets for leaking pipe joints, gaskets for leaking pipes | Leave a comment

Flanges for Saltwater

Posted on December 16, 2020 by Kathleen

Q: I need a high strength salt water resistant flange for a naval application. Will be in rapidly moving seawater. A: Here I would suggest a Monel K500 flange. Monel K500 is extremely strong as it is age hardened. It offers 160 ksi of ultimate tensile strength. Also Monel flanges … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Flanges for salt water, flanges for saltwater, flanges for sea water, flanges for seawater, monel flanges for salt water, monel flanges for saltwater, monel flanges for sea water, monel flanges for seawater, monel k500 flanges for salt water, monel K500 flanges for saltwater, monel K500 flanges for sea water, monel K500 flanges for seawater | Leave a comment

What is the Revoseal Vario?

Posted on December 14, 2020 by Kathleen

Q: What is the Vario gasket design? A: Vario is not a unique gasket at all, it is an adder to the existing JP/JG Revoseal gaskets to add in centering the gasket no matter what pressure class flange that the gasket is being mated to. This save metal costs as … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Revoseal Vario, Revoseal vario pressure class | Leave a comment

Revoseal Gaskets vs. Kammprofile and Spiral Wound

Posted on December 7, 2020 by Kathleen

Q: How do the Revoseal gaskets compare in terms of leak rate to a spiral wound or kammprofile style? A: The Revoseal gaskets perform hundreds to thousands of times better than these types of gaskets. Kammprofile gaskets leak 765 times MORE than a Revoseal gasket and spiral wound gaskets leak … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged better leak rate than kammprofile, better leak rate than spiral wound gasket, gasket with better leak rate than camprofile, gasket with better leak rate than kammprofile, gasket with better leak rate than spiral wound gasket, gasket with lower leak rate than camprofile, gasket with lower leak rate than kammprofile, gasket with lower leak rate than spiral wound gasket, lower leak rate gasket than camprofile, lower leak rate gasket than kammprofile, lower leak rate gasket than spiral wound gasket, Revoseal gasket vs kammprofile gasket, Revoseal gasket vs spiral wound gasket | Leave a comment

High Temperature Gasket for Hazardous Application

Posted on December 2, 2020 by Kathleen

Q: I need a high temperature gasket that can provide a tight seal to a hazardous application that reaches temps of about 1200F. Do you have a product that can help me? A: Yes. An Inconel JG / JP gasket can give you high temperature resistance at these temperatures. The … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged High temperature gasket, high temperature proof gasket, high temperature resistant gasket, leak proof gasket, leak proof seal gasket, leak resistant gasket, temperature resistant gasket | Leave a comment

Gasket for Dissimilar Flange Face

Posted on November 30, 2020 by Kathleen

Q: I need a gasket for dissimilar flange faces with an 8mm gap. Is there a solution you can provide to fit this issue? A: Yes. We can produce custom JG / JP gaskets that fit dissimilar flange faces for a tight seal. JG / JP gaskets could be made … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Gasket for Different flange face, Gasket for dissimilar flange face, Gasket for two different flange faces, Gasket for unlike flange face, Gaskets for dissimilar flange face | Leave a comment

Salt Corrosion Resistant Titanium Gaskets

Posted on November 25, 2020 by Kathleen

Q: I’m using a spiral wound gasket and am having difficulties with leakage. Can you recommend something that can protect against leakage and handle a harsh salt-rich corrosive environment? A: For this type of application I would recommend a titanium or Titanium JG / JP gasket. This style of gasket … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged chloride corrosion resistant gasket, corrosion resistant gasket, Gasket better than spiral wound, leak proof gasket, leak resistant gasket, low leak rate gasket, Lowest Leak Rate Gasket, salt corrosion resistant gasket, titanium corrosion resistant gasket, titanium gasket, titanium gasket better than spiral wound, Titanium JG / JP Gasket, Titanium leak proof gasket | Leave a comment

Low Leak Rate Gasket for Heat Transfer Fluid Application

Posted on November 24, 2020 by Kathleen

Q: I have a leaking gasket that is in a heat transfer fluid application. What do you recommend? A: For this situation you may want to try the Revolution gasket system. Due to consistent sealing pressure it will offer you a far lower leak rate than an off the shelf … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged consistent sealing gasket, gasket for fluid transfer application, gasket for heat transfer fluid aplication, high sealing gasket, low leak rate gasket, Low Leak rate gasket for heat transfer fluid application, revolution gasket system, Revoseal gasket system, revoseal revolution gasket, Vibration proof gasket | Leave a comment

Duplex Gasket for High Pressure Application

Posted on November 23, 2020 by Kathleen

Q:Can I get the Eco+ gasket in Duplex Steel? I have a high pressure application A:Unfortunately Eco+ standard material of construction is 316L or 316Ti; however specialty materials like Duplex are available in the JG / JP design. This type of gasket can handle the most harsh environments – not … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged Duplex 2205 Gasket for High pressure application, Duplex Gasket for High pressure application, Duplex Steel Gasket for High pressure application, Gaskets for High Pressure, High Pressure Gasket, High pressure gasket application, Super Duplex 2507 Gasket for High pressure application | Leave a comment

High Pressure Gasket to Prevent Leakage

Posted on November 18, 2020 by Kathleen

Q: I have a high pressure steam application that is affected by a lot of hammering (pressure fluctuations). What gasket design can I use to prevent leakage? A: For this application I would recommend the Revoseal Eco+. Not only does this gasket offer 1000x better sealing than graphite gaskets, its … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged Gasket better than camprofile gasket, Gasket better than graphite gasket, Gasket for high pressure steam application, Gasket for steam application, Gaskets better than spiral wound gasket, gaskets for fluctuating pressure, Gaskets for hammering application, Gaskets for High Pressure, Gaskets for Pressure fluctuations, High Pressure Gasket, High Pressure Revoseal Gasket, Low leak gasket, low leak rate gasket, Revoseal Eco+ Gasket | Leave a comment

High Temperature Gasket for Cyclic Conditions

Posted on November 16, 2020 by Kathleen

Q: I need a high temperature gasket that would be able to handle thermal cycling. Any ideas? A: The Revolution gasket is ideal for thermal cycling. The design of the gasket accommodates flange movement that can be caused by thermal cycling and vibration. The corrugated design of the Revolution gasket … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged gasket for cyclic conditions, gasket for cyclic temperature conditions, gasket for high temperature, gasket for thermal cycling, High temperature gasket, low leak rate gasket, low leak rate gasket for cyclic conditions, low leak rate gasket for cyclic temperature, low leak rate high temperature gasket, low leak rate thermal cycling gasket, revolution gasket, revoseal revolution gasket | Leave a comment

Hastelloy Gasket for Sulfuric Acid

Posted on November 13, 2020 by Kathleen

Q: I have a highly corrosive sulfuric acid application that I need a gasket for a Hastelloy flange. Can you tell me which style gasket would work best? A: The JP/JG gasket would be the best for your application. Because it can be made from specialty alloys like the Hastelloy … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged corrosion resistant gaskets, gasket for sulfuric acid, gasket for sulfuric acid corrosion resistance, hastelloy gaskets, jg / jp gasket, nickel alloy gaskets, revoseal gaskets, specialty alloy gaskets | Leave a comment

Inconel 600 Bolts & Alloy 330 Bolts for High Temperature Oxidation

Posted on October 19, 2020 by Kathleen

Q: I have an application that requires high temperature oxidation resistance up to about 2000F. Any suggestions? A: For these conditions there are two options I would suggest. You could try Inconel 600 bolts which are usable to 2000F. They offer excellent carburization and oxidation resistance. Since your process is … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy 330 bolts for high temperature oxidation resistance, Alloy 330 fasteners for high temperature oxidation resistance, Alloy 330 for high temperature oxidation resistance, Alloy 330 screws for high temperature oxidation resistance, Inconel 600 bolts for high temperature oxidation resistance, Inconel 600 fasteners for high temperature oxidation resistance, Inconel 600 screws for high temperature oxidation resistance | Leave a comment

Titanium Grade 5 for Medical Implant Bolting

Posted on October 13, 2020 by Kathleen

Q: We are researching a bolt to be used in a medical implant? Is there a standard material you can suggest? A: While there are a variety of possibilities depending on the requirements for the screw, a go to material for many implantable fasteners for good strength and biocompatibility, is … Continue reading →

C276 Bolting for Valve in NaCl

Posted on October 9, 2020 by Kathleen

Q: We are using A4 stainless bolting on Hastelloy C22 valves for a process that involves NaCl processing media. We are experiencing corrosion. Can you suggest a bolt that would help eliminate this. Can you make any suggestions? Also could you share the mechanical properties of any suggestions as well. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged C276 bolts for NaCl corrosion, C276 fasteners for NaCl corrosion, C276 screws for NaCl corrosion | Leave a comment

Tungsten Fasteners for Radiopaque Applications

Posted on October 8, 2020 by Kathleen

Q: I’m looking for a radiopaque material for an xray application. I’ve tried lead but need something that is more intense that could be made into a screw. Is there a material you can suggest? A: Tungsten screws are excellent for radiopaque x-ray applications. Tungsten offers a higher density than … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged tantalum bolts for Radiopaque application, tantalum fasteners for Radiopaque application, tantalum screws for Radiopaque application, Tungsten bolts for Radiopaque application, Tungsten fasteners for Radiopaque application, Tungsten screws for Radiopaque application | Leave a comment

AL6XN Bolts for Improved Temperature Stability

Posted on October 5, 2020 by Kathleen

Q: I’ve been using 254 SMO bolts and am happy with their corrosion resistance but need a little more high temperature stability as sometimes our process can go up to 800F. Any suggestions? A: 254 SMO bolts are in a class of material called 6 Moly alloys. Another 6 Mo … Continue reading →

Posted in Application, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged 254 SMO vs AL6XN bolts, 254 SMO vs AL6XN fasteners, 254 SMO vs AL6XN screws, AL6XN bolts for high temperatures, AL6XN fasteners for high temperatures, AL6XN for high temperature resistance, AL6XN screws for high temperatures, AL6XN vs 254 SMO bolts, AL6XN vs 254 SMO fasteners, AL6XN vs 254 SMO screws | Leave a comment

Alloy 926 Bolts for Improved Corrosion Resistance to 316

Posted on October 2, 2020 by Kathleen

Q: I have some 316 bolts that are experiencing slight corrosion from a mild chloride environment. I need an economic solution but a more corrosion resistant material. Any ideas? A: You have a few options here but you should consider a class of alloys called 6 Mo or 6 Moly … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 926 bolts for improve corrosion compared to 316, Alloy 926 bolts vs 316, Alloy 926 bolts vs stainless steel, Alloy 926 fasteners for improve corrosion compared to 316, Alloy 926 fasteners vs 316 stainless, Alloy 926 fasteners vs stainless steal, Alloy 926 screws for improve corrosion compared to 316, Alloy 926 screws vs 316, Alloy 926 screws vs stainless steal, Alloy 926 vs 316 S, Alloy 926 vs 316 stainless | Leave a comment

Inconel Bolts for High Pressure Flange

Posted on October 2, 2020 by Kathleen

Q: Looking for a bolt rated 320 psi for use at a temperature of 1292F on an Incoloy 80oHT flange? Suggestions? A: Assuming you want hex head bolts and Inconel 625 is probably your best choice at those temperatures. At about 1300F, Inconel 625 bolts (per the chart below) should … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Leave a comment

Inconel 625 Bolts for Strength at 950C

Posted on September 29, 2020 by Kathleen

Q: We are having issues with a high temperature flanged joint where the bolts are continually loose when they cool down the system. The issue to me sounds like the bolts are losing tension due to the temps being too high and softening the bolts so they are plastically deforming. … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Inconel 625 bolt for strength, Inconel 625 bolts for high temperature strength, Inconel 625 fasteners for high temperature strength, Inconel 625 fasteners for strength, Inconel 625 screws for high temperature strength, Inconel 625 screws for strength | Leave a comment

Fasteners for High Temperature Exhaust Stream

Posted on September 24, 2020 by Kathleen

Q: I have a high temperature exhaust stream that needs an oxidation resistant fastener? Any suggestions, my temperature is about 1400F? A: For this temperature you have a few options depending on the strength you need. One option may be Nimonic 80A bolts which are usable to about 1500F. Also … Continue reading →

Inconel 625 Bolts for 1650F Exhaust Duct

Posted on September 22, 2020 by Kathleen

Q: I need fasteners for an exhaust duct where I want to use bolts to act as a stopper for a blast gate. The max temperature 1650F. Any suggestions? A: In this type of environment, Inconel 625 bolts would be one of the strongest and most temperature resistant materials you … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Inconel 625 bolts for high temperature, Inconel 625 fasteners for high temperature, Inconel 625 screws for high temperature, Inconel bolts for 1650F, Inconel bolts for high temperature, Inconel fasteners for 1650F, inconel fasteners for high temperature, Inconel screws for 1650F, inconel screws for high temperature | Leave a comment

Super Duplex Bolts Compared to 254 SMO & Titanium

Posted on September 18, 2020 by Kathleen

Q: I need a material with slightly more corrosion resistance than the Super Duplex bolts I’m using. I’m using them in heated salt water for desalination and over time experiencing slight corrosion. Anything that could withstand the salt water better? A: You have a lot of options. One may be … Continue reading →

Strength of Hastelloy C276 bolts vs. A4

Posted on September 16, 2020 by Kathleen

Q: Can you tell me how the mechanical properties of C276 compare to the A4 stainless? A: That would depend on the grade of A4 you are talking about but as a rough comparison Hastelloy C276 bolts per ASTM B564 would have a MIN Tensile of 100ksi and a MIN … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Hastelloy C276 vs A4 | Leave a comment

Inconel 600 Bolts vs. Inconel 601 Bolts

Posted on September 14, 2020 by Kathleen

Q: Can you tell me what the difference is between Inconel 600 and 601? I need a material for high temperature thermal cycling. A: Both Inconel 600 and Inconel 601 bolts are oxidation resistant at high temperatures. The main difference is that Inconel 600 bolts have a maximum usable temperature … Continue reading →

Hastelloy C276 Bolts vs Inconel 625 Bolts

Posted on September 14, 2020 by Kathleen

Q: Can you tell me the difference between Hastelloy C276 and Inconel 625? They both seem to be corrosion resistant to sulfuric acid but I also need a high strength material. A: Yes both perform well in sulfuric acid application, but in terms of corrosion resistance, Hastelloy C276 bolts would … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Hastelloy bolts vs Inconel bolts, Hastelloy C276 bolts vs. Inconel 625 bolts, Hastelloy C276 fasteners vs. Inconel 625 fasteners, Hastelloy C276 screws vs. Inconel 625 screws, Hastelloy C276 vs. Inconel 625, Hastelloy fasteners vs. Inconel fasteners, Hastelloy screws vs Inconel screws, Hastelloy screws vs. Inconel screwss, Hastelloy vs Inconel | Leave a comment

When to Choose Duplex Steel Bolts vs 316 Stainless

Posted on September 14, 2020 by Kathleen

Duplex Steel: Strength & Corrosion Resistance Beyond 316 316 Stainless steel fasteners have many applications, but if you are looking for an all-around improved fastener without breaking the budget, Duplex alloys might be a good choice. Duplex steel fasteners are known for their improved strength (being about 2x stronger) and … Continue reading →

Alloy 330 vs 310 Stainless for Thermal Cycling

Posted on September 4, 2020 by Kathleen

Q: Can you tell me the difference between alloy 330 and 310 stainless fasteners? I’d like a more economic alternative to the 330 but didn’t know if 310 stainless could be used instead. I have extreme cyclic conditions running to about 2000F? A: If cyclic conditions are a concern you … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy 330 bolts for cyclic temperature conditions, Alloy 330 bolts for thermal cycling, Alloy 330 compared to 310 Stainless Steel, Alloy 330 fasteners for cyclic temperature conditions, Alloy 330 fasteners for thermal cycling, Alloy 330 screws for cyclic temperature conditions, Alloy 330 screws for thermal cycling, Alloy 330 vs 310 Stainless Steel | Leave a comment

Titanium Screws for Bleach Corrosion Resistance

Posted on September 4, 2020 by Kathleen

Q: We are using a bleach solution as part of a medical device application and seeing some rust/corrosion? Any ideas on a fastener material that will not corrode in bleach? Chemicals used are: 5.25% Sodium hypochlorite (or 10% bleach), 70% Isopropyl alcohol and Ammonium chloride A: You might want to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Titanium bolts for bleach corrosion, titanium bolts for Sodium hypochlorite corrosion, titanium fasteners for Ammonium chloride corrosion, titanium fasteners for bleach corrosion, titanium fasteners for Sodium hypochlorite corrosion, titanium screws for Ammonium chloride corrosion, Titanium screws for bleach corrosion, titanium screws for Sodium hypochlorite corrosion | Leave a comment

Zirconium Fasteners for HCl Corrosion

Posted on September 1, 2020 by Kathleen

Q: Can I use zirconium bolts in boiling HCl. Concentration would be about 5%? A: Yes, zirconium fasteners work well in hydrochloric acid but may be a bit overkill at that relatively low concentration but depends on the temperature and other media it may be exposed to. Zirconium screws do … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Zirconium bolts for HCl corrosion, Zirconium bolts for hydrochloric acid corrosion, Zirconium fasteners for HCl corrosion, Zirconium fasteners for hydrochloric acid corrosion, Zirconium screws for HCl corrosion, Zirconium screws for hydrochloric acid corrosion | Leave a comment

254 SMO vs. Alloy 20 or AL6XN in Sulfuric Acid

Posted on August 28, 2020 by Kathleen

Q: How does 254 SMO compare with Alloy 20 and AL6XN? Can it handle sulfuric acid? A: To answer your first question, I’ve ranked each of these specialty alloys in terms of their general corrosion resistance to sulfuric acid: 1. Alloy 20 Most 2. AL6XN Moderate 3. 254 SMO Least … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged 254 SMO bolts compared to AL6XN, 254 smo bolts compared to alloy 20, 254 SMO compared to AL6XN, 254 SMO compared to alloy 20, 254 SMO fasteners compared to AL6XN, 254 SMO fasteners compared to Alloy 20, 254 SMO screws compared to AL6XN, 254 SMO screws compared to alloy 20, 254 SMO vs AL6XN, 254 SMO vs alloy 20, Alloy 20 bolts for sulfuric acid, alloy 20 fasteners for sulfuric acid, alloy 20 screws for sulfuric acid | Leave a comment

Moly Bolts Ideal for High Temperature Vacuum

Posted on August 26, 2020 by Kathleen

Q: Are Nimonic bolts a good choice for a high temperature vacuum environment? A: That depends. Typically for extreme temperatures in a vacuum we recommend Molybdenum fasteners. Moly bolts have an extremely high melting point and can be used at much higher temperatures – close to 2900F – ONLY when … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Moly bolts for high temperature vacuum, Moly fasteners for high temperature vacuum, Moly screws for high temperature vacuum, Molybdenum bolts for high temperature vacuum, Molybdenum fasteners for high temperature vacuum, Molybdenum screws for high temperature vacuum | Leave a comment

Duplex Steel Bolts for Brackish Water

Posted on August 26, 2020 by Kathleen

Q: I’m looking for a material that can service a brackish water environment with high strength around 100ksi, would SMO 254 work for me? A: In terms of the corrosion resistance, yes, but for strength you are right on the edge of the capabilities for 254 SMO fasteners. 254 SMO … Continue reading →

Hastelloy Bolts for Nitric Acid Corrosion

Posted on August 20, 2020 by Kathleen

Q: Which material would be better suited for a nitric acid environment (Hastelloy C276 or Inconel)? The screws would not be submersed in the acid, but in a room where the screws would be around the fumes. A: For nitric acid fumes Hastelloy C276 bolts would be the go-to material … Continue reading →

Lightweight Nut Similar Strength to Class 10 Steel

Posted on July 14, 2020 by dean

Q: I’m looking for a nut in a large metric size. I know I can’t get it made in this large a size for class 10 steel so I’m hoping you can recommend a material that can be made to an M16 with similar strength. A: If you are looking … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged titanium bolts for lightweight strength, titanium fasteners for lightweight strength, titanium fasteners similar strength to class 10 steel, titanium nuts for lightweight strength, titanium nuts for similar strength to class 10 steel, Titanium similar strength to class 10 steel | Leave a comment

Super Duplex Bolts for Greater Strength over 400 Stainless

Posted on June 29, 2020 by dean

Q: Currently I’m using screws made of 400 series stainless steel for use in factory machinery that is moving in a circular path creating a centrifugal force. Our existing bolts are breaking and we’re looking for a bolt with a more rigid type of material that will not break or … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Duplex 2507 bolts for higher strength over 400 stainless steel, Duplex 2507 bolts for improved strength over 400 stainless steel, Duplex 2507 fasteners for higher strength over 400 stainless steel, Duplex 2507 fasteners for improved strength over 400 stainless steel, Duplex 2507 for improved strength over 400 stainless steel, Duplex 2507 screws for higher strength over 400 stainless steel, Duplex 2507 screws for improved strength over 400 stainless steel, Super Duplex 2507 vs 400 Stainless Steel, Super Duplex bolts for higher strength over 400 stainless steel, Super Duplex bolts vs 400 Stainless Steel, Super Duplex fasteners for higher strength over 400 stainless steel, Super Duplex fasteners vs 400 Stainless Steel, Super Duplex screws for higher strength over 400 stainless steel, Super Duplex screws vs 400 Stainless Steel, Super Duplex vs 400 Stainless Steel | Leave a comment

Strong, High Temperature Fastener for Gas Turbines

Posted on June 25, 2020 by dean

Q: I’m in need of hex head bolts for a gas turbine hot section application. These bolts would need good strength and min. temperature tolerance of 1000 degF. Any suggestions? A: A286 bolts are an option, but would be on the lower end of these materials in terms of temperature … Continue reading →

Monel Better than Nickel 200 for HF Corrosion

Posted on June 16, 2020 by dean

Q: Will Nickel 200 bolts be a good choice for hydrofluoric acid? A: For aqueous HF, Nickel 200 fasteners offer limited protection. If application requires a metal then you may want to consider Monel 400. Monel 400 bolts are the most resistant option for hydrofluoric acid in all concentrations up … Continue reading →

Difference Between Grades of Nitronic Fasteners

Posted on May 27, 2020 by dean

Q: What is the difference between Nitronic 50 and 60? A: Both grades of Nitronic offer similar strength which is nearly double the yield strength of 300 series stainless steel (Nitronic 50 100ksi UTS and Nitronic 60 95ksi UTS). The real difference is in the temperature capabilities and the usage … Continue reading →

Understanding the Different Grades of Tungsten Fasteners

Posted on May 21, 2020 by dean

Q: What is the difference between the different grades of tungsten and why would I choice one vs the other? A:Tungsten fasteners are available in commercially pure tungsten (Tungsten CP) which is 99.95% pure. This grade offers the highest density, strength and hardness of all the grades. It is also … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged diference between the grades of tungsten screws, difference between classses of tungsten bolts, difference between classses of tungsten fasteners, difference between classses of tungsten screws, difference between the grades of tungsten bolts, difference between the grades of tungsten fasteners, different grades of tungsten bolts, different grades of tungsten fasteners, different grades of tungsten screws, What is the differents between the grades of tungsten | Leave a comment

Tungsten Screws for Radiopaque Applications

Posted on May 20, 2020 by dean

Q: I’m looking for a material that is radiopaque. Do you have any suggestions? A: Two materials come to mind. First is tantalum. It is often used in medical applications for its radiopacity. Tantalum fasteners are also bio-compatible and extremely corrosion resistant. The second material is tungsten. Tungsten fasteners come … Continue reading →

Posted in Application, FAQs, Specialty Metal Fasteners | Tagged Tantalum bolts for radiopacity, tantalum bolts for Radiopaque application, Tantalum fasteners for radiopacity, tantalum fasteners for Radiopaque application, Tantalum screws for radiopacity, tantalum screws for Radiopaque application, Tungsten bolts for Radio-opaque application, Tungsten bolts for radiopacity, Tungsten bolts for Radiopaque application, Tungsten fasteners for Radio-opaque application, Tungsten fasteners for radiopacity, Tungsten fasteners for Radiopaque application, Tungsten screws for Radio-opaque application, Tungsten screws for radiopacity, Tungsten screws for Radiopaque application | Leave a comment

Inconel 625 Bolts For High Temperature Corrosion

Posted on May 18, 2020 by dean

Q: Is there a material you can recommend that can handle a high temperature exhaust stream which has trace corrosive chemicals? I’ve tried A286 bolting but am having some corrosion issues. A: When a process demands high temperature corrosion resistance, depending on the temperature and amount of contamination, you might … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Inconel 625 bolts for exhaust stream corrosion, Inconel 625 bolts for high temperature corrosion, Inconel 625 fasteners for exhaust stream corrosion, Inconel 625 fasteners for high temperature corrosion, Inconel 625 screws for exhaust stream corrosion, Inconel 625 screws for high temperature corrosion, Inconel bolts for high temperature corrosion, Inconel fasteners for high temperature corrosion, Inconel screws for high temperature corrosion | Leave a comment

Inconel, Monel & Titanium bolts for strength and high temps

Posted on April 29, 2020 by dean

Q: I’m in need a high strength bolt that can not only withstand temperatures of 1000F but also be exposed to chemical contaminants from time to time. The 1000F is the max, probably not the constant. Strength would need to be around 150ksi. Contaminants would be salts and some low … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged high temperature and corrosion resistance, inconel 718 bolts for strength, inconel 718 fasteners for strength, inconel 718 screws for strength, Inconel bolts for strength, inconel fasteners for strength, temperature and corrosion resistance | Leave a comment

Fasteners That Keep Us Safe

Posted on April 28, 2020 by dean

Modern day engineering is key to helping the world through this difficult time, and specialty material bolts make it possible. Materials like titanium, PEEK and 17-4PH provide the corrosion resistance and high strength needed for manufacturing and high-tech distribution. This newsletter shows some of the ways Special Fasteners China. & Fastener … Continue reading →

Posted in Application, Blog, Corrosion Resistance, Engineered Polymer Fasteners, High Strength, Material, Specialty Metal Fasteners, Ultra Purity | Tagged 17-4PH bolts for robotic systems, 17-4PH fasteners for robotic systems, 17-4PH screws for robotic systems, al6xn screws for chloride corrosion resistance, AL6XN screws for chloride resistance, Hastelloy fasteners for pharmaceutical, Hastelloy screws for pharmaceutical, peek bolts for chemical resistance, PEEK fasteners for chemical resistance, PEEK fasteners for strength and stiffness, PEEK screws for chemical resistance, PEEK screws for strength and stiffness, PTFE fasteners for pharmaceutical, PTFE screws for pharmaceutical, titanium bolts for chloride corrosion resistance, titanium bolts for pulp & paper, titanium fasteners for chloride corrosion resistance, titanium fasteners for pulp & paper, Titanium screws for chloride corrosion resistance, titanium screws for pulp & paper | Leave a comment

Duplex Bolts for Oil & Gas Brine

Posted on April 27, 2020 by dean

Q: I have the need for a bolt that can withstand high temp brine byproduct from an oil & gas installation. Any suggestions? A: Depending on what temperatures you are dealing with Duplex Steel bolts may be a good fit. Duplex bolts provide good localized resistance to brines and chlorides. … Continue reading →

Tungsten Set Screw for Density & Strength

Posted on April 24, 2020 by dean

Q: I’m looking for a high density material that is also high strength. I need set screws for a weighted part, but they also need to have about 120ksi of tensile strength. Is this possible? A: Yes, for this type of application you’ll want to use pure tungsten or a … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged tungsten alloy bolts for high strength, tungsten alloy bolts for weighting, tungsten alloy fasteners for high strength, tungsten alloy fasteners for weighting, tungsten alloy screws for high strength, tungsten alloy screws for weighting, tungsten bolts for high strength, tungsten bolts for weighting, tungsten fasteners for high strength, tungsten fasteners for weighting, tungsten screws for high strength, tungsten screws for weighting | Leave a comment

Inconel 625 Bolt for High Temperature Chemical Processing

Posted on April 21, 2020 by dean

Q: I need a bolt that can handle a chemical processing situation where there are not only corrosive chemicals but also high temperatures that can fluctuate. Max temp is around 1200F. What would you suggest? A: Not knowing the chemicals you are using makes it tough, but for high temperature … Continue reading →

Hastelloy vs. Zirconium for HCl with Contaminants

Posted on April 17, 2020 by dean

Q: I have a process that utilizes about 10% hydrochloric acid with trace amounts of other chemicals. I tried zirconium bolts because they are known for HCl but we’re burning through them like crazy and I can’t figure out why they are corroding. Any ideas and what other material may … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Hastelloy bolts for HCl corrosion, Hastelloy bolts for hydrochloric acid corrosion, Hastelloy C276 bolts for HCl corrosion, Hastelloy C276 fasteners for HCl corrosion, Hastelloy C276 screws for HCl corrosion, Hastelloy FAsteners for HCl corrosion, Hastelloy for HCl corrosion, tantalum bolts for hot hydrochloric acid corrosion, tantalum fasteners for hot hydrochloric acid corrosion, Zirconium bolts for HCl corrosion, Zirconium bolts for hydrochloric acid corrosion, Zirconium fasteners for HCl corrosion, zironium fasteners for hydrochloric acid corrosion | Leave a comment

17-4PH Bolts for High Strength

Posted on April 15, 2020 by dean

Q: I have equipment that requires a high strength bolt. Temperature and corrosion are not an issue, solely strength. I had tried Super Duplex thinking that would do the trick, but I’m still having breakage. Any ideas? A: For an application that exclusively requires high strength, you might want to … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged 17-4PH bolts for high strength, 17-4PH fasteners for high strength, 17-4PH for high strength, 17-4PH screws for high strength | Leave a comment

Titanium & Monel K500 for High Strength Saltwater Corrosion

Posted on April 9, 2020 by dean

Q: I’ve been using Monel 400 for a saltwater application but I’m having issues with bolts notwithstanding the application pressure. Is there a saltwater resistant fastener that can give me higher strength? A: Yes for higher strength saltwater resistance you have two options. Monel K500 bolts are an age hardened … Continue reading →

Alloy 330 for Cyclic High Temperatures

Posted on April 6, 2020 by dean

Q: I’m running a process that has a huge swing in temperature fluctuations due to downtime and maintenance. The max temperature is around 1500F. Can you suggest a material that can handle this? A: For processes that are faced with the dual dilemma of both high temperature and cyclic conditions, … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged alloy 330 bolts for cyclic temperatures, alloy 330 bolts for fluctuating high temperatures, Alloy 330 bolts for high temperature, alloy 330 fasteners for cyclic temperatures, alloy 330 fasteners for fluctuating high temperatures, alloy 330 fasteners for high temperature, Alloy 330 for high temperature reisstance, alloy 330 screws for cyclic temepratures, alloy 330 screws for fluctuating high temperatures, alloy 330 screws for high temperature | Leave a comment

Duplex Bolts for DI Water Corrosion & Strength

Posted on April 3, 2020 by dean

Q: We need a custom bolt for securing a 304SS flange to a pressure vessel located in a submerged DI water pit. We have a few concerns/requirements. First, we need to ensure that galling and corrosion do not prevent us from removing the bolts during service events (between 1 and … Continue reading →

Posted on April 1, 2020 by dean

Q: I am looking to eventually get a quote for some 3/8″ studs and nuts. I need to have a min yield stress of 29 ksi at 700F. SA-540 Grade B22 Class 2 or SB-637 should work. Is this something you can provide? A: These are very different materials: A-540 Grade B22 Class … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Inconel 625 studs for high strength, Inconel 625 studs for high temperature, Inconel 718 fasteners for high temperature, Inconel 718 studs for high strength, Inconel 718 studs for high temperature, Inconel studs for high temperature, Inconel studs for strength | Leave a comment

Hastelloy Bolts for Acid Contaminated Chloride

Posted on April 1, 2020 by dean

Q: I have an application that is exposed to mainly chloride but has some other acid contamination. Can I still use titanium to protect for corrosion. A: Though titanium fasteners are highly resistant to chloride – almost immune – they typically do not work well with many other mixed acid … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 20 bolts for acid corrosion, alloy 20 bolts for chloride contaminated corrosion, alloy 20 fasteners for acid corrosion, alloy 20 fasteners for chloride contaminated corrosion, Alloy 20 screws for acid corrosion, alloy 20 screws for chloride contaminated corrosion, c276 bolts for acid contaminated chloride, c276 bolts for acid corrosion, c276 bolts for chloride contaminated corrosion, c276 screws for acid contaminated chloride, c276 screws for acid corrosion, c276 screws for chloride contaminated corrosion, hastelloy bolts for acid contaminated chloride, hastelloy bolts for acid corrosion, hastelloy fasteners for acid contaminated chloride, hastelloy fasteners for acid corrosion, hastelloy screws for acid contaminated chloride, hastelloy screws for acid corrosion | Leave a comment

Use of Molybdenum Screws In Air/Outside Vacuum

Posted on March 31, 2020 by dean

Q: Can I use Molybdenum outside of a vacuum? A: Yes and no. It can be used outside a vacuum but it is much more limited, especially if in an oxygen rich environment. The catch is if you use Molybdenum outside a vacuum (in an oxygenated environment) the temperature MUST … Continue reading →

Posted in Application, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Molybdenum fasteners in air, Molybdenum screws in air, Molybdenum screws outside a vacuum, Use of Molybdenum outside a vacuum, Use of molybdenum screws outside a vacuum | Leave a comment

Tantalum Screws for Hydrochloric Acid Resistance

Posted on March 30, 2020 by dean

Q: We currently use Titanium screws, and I would like to know pricing and lead time to replace them with Tantalum screws to improve their resistance to HCL. A: What concentration and temp are you at with the HCl? See the HCl Iso-Corrosion curve for Hastelloy C276. Tantalum screws will … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged alloy C276 bolts for HCl, alloy C276 fasteners for HCl, alloy C276 screws for HCl, C276 bolts for hydrochloric acid, C276 fasteners for hydrochloric acid, c276 for hydrochloric acid, c276 screws for hydrochloric acid, Hastelloy bolts for HCl, Hastelloy Fasteners for HCl, Hastelloy screws for HCl, Tantalum bolts for HCl, tantalum bolts for hydrochloric acid, Tantalum fasteners for HCl, tantalum fasteners for hydrochloric acid, tantalum screws for HCl, tantalum screws for hydrochloric acid | Leave a comment

Inconel 625 for 900C High Temperature Application

Posted on March 30, 2020 by dean

Q: I have an application, which will be heated by radiant heat from below to 700°C to 900°C. The problem I am trying to solve is that the screws tend to fuse to the plate they are fastening. Black Oxide alloy steel is the best we’ve tried, but still very … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged alloy 625 bolts for high temperature, alloy 625 fasteners for high temperature, alloy 625 screws for high temperature, Inconel 625 bolts for high temperature, Inconel 625 fasteners for high temperature, Inconel 625 for high temperatures, Inconel 625 screws for high temperature | Leave a comment

Monel Bolts for Saltwater Wharf

Posted on March 27, 2020 by dean

Q: We are installing bolts into a refinery wharf. After doing a test run on a few A316 stainless steel bolts, they came back heavily corroded. Do you have an coating that can be used for salt water applications that would prevent this? Or do can you advise on another … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged bolts for saltwater wharf, fasteners for saltwater wharf, Monel 400, Monel 400 bolts for saltwater corrosion resistance, Monel 400 fasteners for saltwater corrosion resistance, Monel bolts for saltwater corrosion, monel bolts for wharf fasteners, monel fasteners for saltwater corrosion, Monel K500 for salt water corrosion resistance, Monel K500 screws for saltwater corrosion resistance, monel screws for saltwater corrosion, screws for saltwater wharf, titanium bolts for saltwater wharf, titanium grade 5 bolts for saltwater corrosion, titanium grade 5 fasteners for saltwater corrosion, titanium grade 5 screws for saltwater corrosion | Leave a comment

Vented Screws to Dispel Contaminents

Posted on March 27, 2020 by dean

Q: I have an application where I need contaminants to vent. I want to limit the amount of atmosphere that is vented – can I specify the diameter of the drill hole in a vented screw? A: Yes, depending on the diameter we can produce vented screws that are per … Continue reading →

Posted in Application, FAQs, Specialty Metal Fasteners, Ultra Purity | Tagged screws to dispel contaminents, screws to vent contaminents, vented screws for out gasing, vented screws for outgasing | Leave a comment

Hastelloy Spanner Screw for Security

Posted on March 27, 2020 by dean

Q: I’m looking for a unique type of screw called a snake eye screw. I noticed that you work with specialty alloys and I’m looking for this part made of hastelloy – is this possible? A: A snake eye screw is another name for a spanner security screw. Depending on … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Hastelloy snake eye screw, Hastelloy snake eye security screw, Hastelloy snake eye tamper proof screw, Hastelloy spanner screw | Leave a comment

Hastelloy Tamper Proof Screws for Sulfuric Acid Protection

Posted on March 26, 2020 by dean

Q: I have a hazardous application that involves sulfuric acid. We need to prevent anyone from tampering with this application. Can you help me out with a solution? A: Yes. First regarding the sulfuric acid, you’ll need a bolt that can resist this type of environment. Depending on the concentration … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged hastelloy security fasteners, Hastelloy security screws, Hastelloy tamper proof screws, hastelloy tamper proof screws for sulfuric acid, Hastelloy tamper resistant screws, hastelloy tamper resistant screws for sulfuric acid | Leave a comment

Vented Screws Provide Solution to Outgasing

Posted on March 26, 2020 by dean

Q: I heard their is a type of bolt with a hollow core that I can use to enable a faster pump-down on my vacuum system. Is this something you are familiar with or can offer? A: Yes this type of bolt is referred to as a vented screw. It … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged screws for outgasing, specialty alloy screws for outgasing, specialty alloy vented screws, specialty metal vented screws, specialty metal vented screws for outgasing, specialty metal vented screws for vacuum environments, vented fasteners for outgasing, vented screws for outgasing, vented screws for vacuum environments | Leave a comment

Titanium Anchor Bolts for Marine Concrete Fastening

Posted on March 25, 2020 by dean

Q: I have a need for a marine resistant fastener that I can use to fasten equipment to concrete. Is there a bolt you can recommend? A: For concrete fastening one of the best solutions is a wedge anchor bolt. This style of bolt features an expansion mechanism which expands … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Duplex Anchor Bolts for Saltwater, Duplex anchor bolts for seaspray, Duplex Anchor Bolts for Seawater, duplex steel anchor bolts for saltwater, Duplex steel anchor bolts for seawater, duplex steel wedge anchor bolts for saltwater, duplex wedge anchor bolts for seawater, titanium anchor bolts for saltwater, titanium anchor bolts for seawater, titanium wedge anchor bolts for saltwater, titanium wedge anchor bolts for seawater | Leave a comment

Wedge Anchors for Concrete Fastening

Posted on March 24, 2020 by dean

Q: Can I use a wedge anchor to attach a piece of equipment to metal? I need a high strength fastener. A: No. Wedge anchors are used to strictly for fastening into concrete. The anchor is actually an expansion mechanism which fans out and locks the bolt into concrete as … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged specialty metal wedge anchor bolts, wedge anchor bolts for concrete, Wedge anchor for concrete | Leave a comment

Super Duplex Bolts Ideal for Strength & Seaspray

Posted on March 18, 2020 by dean

Q: I need a large quantity of fasteners that can offer about 100ksi of tensile strength and provide me resistance to seaspray and salt air. Is titanium a good choice? A: Titanium grade 5 bolts will meet both these requirements, but will probably be overkill in your situation. For this … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners | Tagged Duplex 2507 bolts for seaspray corrosion, duplex 2507 fasteners for seaspray corrosion, duplex 2507 screws for seaspray corrosion, super duplex 2507 bolts for strength in saltwater, super duplex 2507 fasteners for strength in saltwater, super duplex 2507 screws for strength in saltwater, super duplex bolts for seaspray corrosion, super duplex fasteners for seaspray corrosion, super duplex screws for seaspray corrosion, super duplex steel bolts for saltwater and strength, super duplex steel screws for salt water and strength | Leave a comment

Bolts to Meet NACE Oil & Gas Specs

Posted on March 17, 2020 by dean

Q: We’re in need of bolts for an oil & gas refinery. How can I be sure you your materials meet technical requirements. A: We can provide fasteners that meet NACE MR0175 and NACE MR0103 specific requirements for different metallic materials. When requesting a quote, please ask for all necessary … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners, Uncategorized | Tagged NACE MR0103 bolts, NACE MR0103 fasteners, NACE MR0103 screws, NACE MR0175 bolts, NACE MR0175 fasteners, NACE MR0175 screws | Leave a comment

Hastelloy and Nitric Acid

Posted on March 17, 2020 by dean

Q: Can I use Hastelloy C276 bolts for protection from Nitric Acid? A: Typically this is not recommended. Though C276 bolts are highly corrosion resistant to many acids, it is not very resistant to strong oxidizers like nitric acid. Materials with higher chromium content like Incoloy and possibly Hastelloy C22 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged C22 bolts for nitric acid, c22 bolts for nitric acid corrosion, c22 fasteners for nitric acid corrosion, C22 for nitric acid, c22 screws for nitric acid, incoloy bolts for nitric acid, Incoloy bolts for oxidizing corrosion, incoloy fasteners for nitric acid, Incoloy for oxidizing corrosion, incoloy screws for nitric acid, incoloy screws for oxidizing corrosion | Leave a comment

Tantalum Coating for High Temperature

Posted on March 16, 2020 by dean

Q: I’m interested in TZM or Tantalum fasteners and was also wondering if there was an option to have the fasteners coated to increase the use temperature in air? A: There really is not a coating that could be used for tantalum and molybdenum screws to increase their life in … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged tantalum bolt maximum usage in air, Tantalum bolts for high temperature, Tantalum bolts high temperature, tantalum screws for high temperature, tantalum screws maximum usage in air | Leave a comment

Nickel 200 Bolts for Sodium Hydroxide Corrosion

Posted on March 11, 2020 by dean

Q: We’re using sodium hydroxide as a water treatment chemical to raise the pH of water but are experiencing corrosion. Is there a material that can handle this? A: Typically for caustic soda (sodium hydroxide) corrosion, you might want to consider Nickel 200 bolts. Nickel 200 is best known for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Nickel 200 bolts for caustic corrosion, Nickel 200 bolts for Sodium Hydroxide Corrosion, nickel 200 fasteners for Sodium Hydroxide Corrosion, nickel 200 for Sodium Hydroxide Corrosion, nickel 200 screws for caustic corrosion, nickel 200 screws for Sodium Hydroxide Corrosion | Leave a comment

17-4PH for High Strength Applications

Posted on March 3, 2020 by dean

Q: Looking at options to increase the tensile strength for a socket head cap screw. We are currently using grade 8. Would Waspaloy be a good option? A: If you are looking for a fastener with higher strength than Grade 8 Alloy Steel (150 KSI Tensile, 130 KSI Yield), and … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged 17-4 Bolts for high strength, 17-4 fasteners for high strength, 17-4 screws for high strength, 17-4PH bolts for high strength, 17-4PH fasteners for high strength, 17-4PH screws for high strength | Leave a comment

A286 Bolts for High Temperature Annealing Oven

Posted on February 24, 2020 by dean

Q: I have require fasteners for use in an annealing oven for aa centrifugal fan (@1725 RPM) attached to a shaft with a through bolt and nut (shaft and fan are both SST). The environment is 1275 degrees F at atmospheric pressure and runs continuously 5 days a week I … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged A286 bolts for annealing oven, A286 bolts for high temperatures, A286 fasteners for annealing oven, A286 fasteners for high temperatures, A286 screws for annealing oven, A286 screws for high temperatures | Leave a comment

Inconel 625 Studs for Temperatures of 1650°F

Posted on February 13, 2020 by dean

Q: What stud and nut material should I use with a ANSI 600# Alloy 800 HT pipe class max temperature 1650°F. A: Given that you are at a high temperature and pressure I would recommend going with an Inconel 625 stud. This will provide the best combination of high temperature … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged Inconel 625 fasteners for high temperature, Inconel 625 nuts for high temperature, Inconel 625 studs for high temperature, Inconel fasteners for high tempature, Inconel studs for high temperature | Leave a comment

Large Diameter Bolt Torque Specifications

Posted on February 6, 2020 by dean

Q: Are you able to provide the assembly torque number for titanium M42 diameter bolts? A: The torque required for large bolts like this can vary GREATLY depending on the conditions, lubrication, surface roughness, dirt, etc. The required torque can vary by as much as +/-50%. However with that in … Continue reading →

Posted in FAQs, Specialty Metal Fasteners | Tagged titanium bolt torque specifications, titanium bolt torque specs, titanium M42 torque specs, titanium screw torque specifications, titanium screw torque specs, titanium torque specifications, titanium torque specs | Leave a comment

C276 Socket Head Cap Screw Torque

Posted on January 29, 2020 by dean

Q: Can you provide the torque specification for a Hastelloy C276 4-40 socket head cap screw and a Nickel 200 4-40 socket head cap screw? A: The torque tables are developed for screw heads that have no limitations on torque. Unfortunately the socket head drives will likely cam-out before you … Continue reading →

Posted in Application, Corrosion Resistance, Material, Specialty Metal Fasteners | Tagged c276 socket had cap screw torque, C276 torque specifications, C276 torque specs, hastelloy socket head cap screw torque, hastelloy torque specifications, hastelloy torque specs, Torque specifications, Torque specs | Leave a comment

Inconel for High Strength Sour Gas Applications

Posted on November 20, 2019 by dean

I am looking for the best available material solution for Oil&Gas industry with occasionally presence of H2S. For now we are using A286 but I am not sure about its H2S resistance. What kind of material you can recommend that is comparable to A286 and is H2S rated? When … Continue reading →

Tensile Strength Options for Inconel 718 Bolts

Posted on November 20, 2019 by dean

Q: Im looking for Inconel 718 bolts but I need a bit more strength than what is typically offered as a min of 185ksi Ultimate Tensile. Is it possible to make Inconel 718 stronger than that? A: Yes…Actually Inconel 718 bolts are available in a few different flavors. The most … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged AMS 5663 heat treatment Bolts, AMS 5663 heat treatment fasteners, AMS 5663 heat treatment Screws, AMS 5962 heat treatment bolts, AMS 5962 heat treatment fasteners, AMS 5962 heat treatment screws, Inconel 718 AMS 5663 Bolts, Inconel 718 AMS 5663 FAsteners, Inconel 718 AMS 5663 Screws, Inconel 718 AMS 5962 bolts, Inconel 718 AMS 5962 fasteners, Inconel 718 AMS 5962 screws | Leave a comment

Monel Bolts for Improved Saltwater Resistance to 316

Posted on November 11, 2019 by dean

Q: We are installing denso jackets around several steel piles at a wharf. The jackets are going to be held together by A316 stainless steel bolts. After doing a test on a few, they came back heavily corroded. Can you suggest a material that can handle the salt water? A: … Continue reading →

Monel Bolts Over Nickel 200 for Aqueous Hydrofluoric Acid

Posted on November 6, 2019 by dean

Q: I’m using aqueous Hydrofluoric acid in a silicon etching process but amy Nickel 200 bolts aren’t holding up. Is there a better material I can use? A: Nickel 200 fasteners are excellent for use in anhydrous hydrofluoric acid, but in the aqueous form of HF acid they offer limited … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Monel bolts for aqueous hydrofluoric acid corrosion, Monel bolts for HF acid corrosion, Monel bolts for HF corrosion, Monel bolts for hydrofluoric acid corrosion, Monel fasteners for aqueous hydrofluoric acid corrosion, Monel fasteners for HF acid corrosion, Monel fasteners for HF corrosion, Monel fasteners for hydrofluoric acid corrosion, Monel screws for aqueous hydrofluoric acid corrosion, Monel screws for HF acid corrosion, Monel screws for HF corrosion, Monel screws for hydrofluoric acid corrosion, Nickel 200 bolts for anhydrous hydrofluoric acid, Nickel 200 fasteners for anhydrous hydrofluoric acid, Nickel 200 screws for anhydrous hydrofluoric acid | Leave a comment

Nickel 200 Bolts for Sodium Sulfide & Sodium Hydroxide

Posted on November 1, 2019 by dean

Q: I work in a plant that manufactures paper. We’re treating pulp with a solution containing sodium sulfide and sodium hydroxide to dissolve the wood materials and produce cellulose to make paper. Can you suggest a material that can give our bolting some corrosion protection and better longevity. Some of … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Nickel 200 bolts for alkali solutions, nickel 200 bolts for sodium hydroxide, Nickel 200 bolts for sodium hydroxide corrosion resistance, Nickel 200 Bolts for Sodium Sulfide, Nickel 200 bolts for sodium sulfide corrosion resistance, Nickel 200 fasteners for alkali solutions, Nickel 200 fasteners for Sodium Hydroxide, Nickel 200 fasteners for sodium hydroxide corrosion resistance, Nickel 200 fasteners for Sodium Sulfide, Nickel 200 screws for alkali solutions, nickel 200 screws for sodium hydroxide, Nickel 200 screws for sodium hydroxide corrosion resistance, Nickel 200 screws for Sodium Sulfide, Nickel 200 screws for sodium sulfide corrosion resistance | Leave a comment

Molybdenum Screws for 1000°C High Vacuum

Posted on October 30, 2019 by dean

Q: We are interested in a fastener material that can work at 1000°C in high vacuum? Do you have any suggestions? A: For high temperature vacuum environments, a great material to consider for your fasteners would be Molybdenum screws. Molybdenum screws have an extremely high melting point of over 2600°C … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Molybdenum bolts for 1000C, Molybdenum bolts for high temperature vacuum, Molybdenum bolts for high temperatures, Molybdenum bolts for vacuum environments, Molybdenum fasteners for 1000C, Molybdenum fasteners for high temperature vacuum, Molybdenum fasteners for high temperatures, Molybdenum fasteners for vacuum environments, Molybdenum screws for 1000C, Molybdenum screws for high temperature vacuum, Molybdenum screws for high temperatures, Molybdenum screws for vacuum environments | Leave a comment

MP35N for Extreme Strength of 230 ksi

Posted on October 28, 2019 by dean

Q: I am in need of six 7/8″ diameter bolts, 9″ in length, that can withstand about 230,000 psi in tensile stress for infrastructure project. Do you have any bolt that can meet this strength requirement? A: When you are talking about extremely high strength in the range of 230 … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged MP35N bolts for 230ksi tensile strength, MP35N bolts for high strength, MP35N bolts for ultimate tensile strength, MP35N fasteners for 230ksi tensile strength, MP35N fasteners for high strength, MP35N fasteners for ultimate tensile strength | Leave a comment

Nickel 200 Bolts for Chlor Alkali Process

Posted on October 22, 2019 by dean

Q: I’m running a chlor alkali process to produce sodium hydroxide. We would like bolts that have a strong resistance to the NaOH. Should I try hastelloy? A: In terms of caustic alkaline solutions, such as sodium hydroxide, your best bet would be Nickel 200 bolts which are known to … Continue reading →

Inconel Belleville washers offer high temperature strength

Posted on October 11, 2019 by dean

Q: Isaw on the website that you produce Belleville spring washers. Are you also able to produce these in TZM? We are looking for Belleville spring washers which can withstand high temperatures to 500 degrees Celsius. A: Unfortunately, we can’t produce Belleville washers in TZM or other refractory metals,but we … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Inconel 600 washers for high temperatures, Inconel belleville washers for heat resistance, Inconel belleville washers for high temperatures, Inconel for high temerpatures, Inconel for high temperatures, Inconel washers for 500°C, Inconel washers for heat resistance, Inconel washers for high temperatures | Leave a comment

A286 Bolts Ideal for High Temperature Exhaust Streams

Posted on October 2, 2019 by dean

Q: I’m looking for bolts/nuts material able to withstand to cycling temperature changes from 20 Celsius up to 600 Celsius. Strength is also important . Looking for something with tensile strength at least 800 Mpa. The application is diesel engine exhaust manifold. Looking at your web site not sure Inconel … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged A286 bolts for high temperature exhaust compensators, A286 bolts for high temperature exhaust streams, A286 bolts in high temperature exhaust streams, A286 fasteners for high temperature exhaust, A286 in high temperature exhaust streams, A286 screws for high temperature exhaust, Alloy 660 bolts, Alloy 660 bolts for high temperature exhaust streams, Alloy 660 bolts for high temperature strength, Alloy 660 fasteners for high temperature strength, Alloy 660 screws for high temperature strength | Leave a comment

Monel 400 Bolts for Naval Assembly

Posted on July 24, 2019 by dean

Q: We are providing the Navy components made of Navy G Bronze that incorporates shoulder bolts and set screws. The assembly will be exposed to air, salt water, modest temperatures (0C to 80C), and limited stress. What alloy do you recommend? A: Sounds like a Monel 400 might be a … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Monel 400 bolts for saltwater resistance, Monel 400 bolts for seawater resistance, Monel 400 fasteners for saltwater resistance, Monel 400 fasteners for seawater resistance, Monel 400 scews for seawater resistance, Monel 400 screws for saltwater resistance, salt water resistant bolts, salt water resistant set screws, salt water resistant shoulder bolts, saltwater resistant bolts, saltwater resistant set screws, saltwater resistant shoulder bolts, seawater resistant bolts, seawater resistant set screws, seawater resistant shoulder bolts | Leave a comment

A286 Bolts for Diesel Engine Exhaust Stream

Posted on July 24, 2019 by dean

Q: Looking for bolts that will be used for large Diesel engine exhaust compensators in a power plant. The normal operating temp of the exhaust is 700 degrees F at full load. Loads do fluctuate often and engines experience downtime. The exhaust system does experience extreme force and vibration. Any … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 bolts for diesel engine exhuast streams, A286 bolts for exhaust streams, A286 bolts for high strength, A286 bolts for high temperature exhaust compensators, A286 bolts for high temperature strength, A286 fasteners for exhaust streams, A286 Fasteners for high Strength, A286 fasteners for high temperature exhaust compensators, A286 fasteners for high temperature strength, A286 screws for exhaust streams, A286 screws for high strength, A286 screws for high temperature exhaust compensators, A286 screws for high temperature strength | Leave a comment

Choosing a Refractory Metal Fastener

Posted on May 16, 2019 by dean

What is a refractory metal fastener? Molybdenum, tantalum, tungsten and zirconium are all refractory metals. (We are excluding titanium from this topic although it can be considered a refractory metal by certain definitions). All these refractory metal fasteners are characterized by their high-temperature melting points, but they also have other … Continue reading →

Posted in Blog, High Temperature Resistance, Specialty Metal Fasteners | Tagged Molybdenum bolts for high temperature, molybdenum refractory metal bolt, molybdenum refractory metal fastener, molybdenum refractory metal screw, molybdenum screws for high temperature, refractory metal bolts, Refractory Metal Fasteners, refractory metal screws, tantalum bolts for corrosion resistance, tantalum fasteners for corrosion resistance, tantalum fasteners for high temperature, tantalum screws for corrosion resistance, tungsten bolts for density, tungsten bolts for high temperature, tungsten fasteners for density, tungsten fasteners for high temperature, tungsten screws for density, tungsten screws for high temperature, zirconium bolts for corrosion, zirconium fasteners for corrosion, zirconium refractory metal bolts, zirconium refractory metal fasteners, zirconium refractory metal screws, zirconium screws for corrosion | 3 Comments

Age Hardened 17-4PH and A286 Bolts: Strength & Ductility

Posted on May 2, 2019 by dean

Q: An application with limited space using a #4-40 screw with an assumed tensile strength of 120,000 PSI. This screw continues to break. Do you offer a screw with a higher strength? Also, This screw is used to hold a plate to the end of an air cylinder. It probably … Continue reading →

Inconel Fasteners for 1800F and Corrosion

Posted on April 23, 2019 by dean

I have a customer looking for some studs for a flange that they say could reach 1800deg F. What would you use for that? At 1800F you have a couple of options. In a steel variety you have alloy 330 studs. This will be oxidation resistant and stable at the … Continue reading →

Posted in Application, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Inconel 600 bolts for 1800F, Inconel 600 bolts for high temperature, Inconel 600 fasteners for 1800F, Inconel 600 fasteners for high temperature, Inconel 600 screws for 1800F, Inconel 600 screws for high temperature, Inconel 600 studs for 1800F, Inconel bolts for 1800F, Inconel fasteners for 1800F, Inconel for 1800F, Inconel screws for 1800F | Leave a comment

A4-80 vs Monel K500 Fasteners in Sea Water

Posted on April 3, 2019 by dean

Q: For a marine project will 316SS cold worked (grade A4-80) hold up in strength pretty close to Monel K500? And what is the price comparison? A: Thanks for contacting and good question. The major difference is the strength and corrosion resistance. You will have decent strength of a A4-80 … Continue reading →

HCl Acid – Polymer, Zirconium or Tantalum Fasteners

Posted on April 3, 2019 by dean

Q: We have on application that utilizes an HCl tank and are currently using hastelloy C276 bolts but they are not sufficient. Should we try tantalum fasteners or anther material like PEEK? The bolts are for a flanged valves connections concentration is 36%, temperature 45oC. A: Though the HCl is … Continue reading →

17-4 Corrosion Resistance and Strength?

Posted on April 3, 2019 by dean

Q: I need a material that offers about 80-90ksi yield but is also corrosion resistant to low concentrations of sulfur acid. I’m tried 17-4Ph but its not working? Any ideas. A: Yes, 17-4PH fasteners are excellent for high strength like you need, but are not really geared for corrosion resistance … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged 17-4PH bolts corrosion resistance, 17-4PH bolts for high strength, 17-4PH bolts for strength, 17-4PH fasteners corrosion resistance, 17-4PH fasteners for high strength, 17-4PH fasteners for strength, 17-4PH screws corrosion resistance, 17-4PH screws for high strength, 17-4PH screws for strength, 17-4PH vs Alloy 625, 17-4PH vs Inconel 625 | Leave a comment

Do’s and Don’ts of Titanium Fasteners

Posted on March 25, 2019 by dean

Titanium is an amazing material offering strength, lightness of weight, and corrosion resistance but there are also instances that titanium should not be used. This brief newsletter covers the do’s and don’ts of titanium screws. Do Use for Saltwater & Chloride Resistance One of the most noteworthy uses of titanium … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, Lightweight, Specialty Metal Fasteners | Tagged titanium bolts for chloride, Titanium bolts for chloride corrosion, titanium bolts for saltwater, titanium bolts for saltwater corrosion, titanium fastener applications, titanium fastener uses, titanium fasteners for chloride, Titanium fasteners for chloride corrosion, titanium fasteners for saltwater, titanium fasteners for saltwater corrosion, titanium screws for chloride, Titanium screws for chloride corrosion, titanium screws for saltwater, titanium screws for saltwater corrosion | Leave a comment

17-4 Corrosion Resistance to Sulfuric Acid & Inconel

Posted on February 27, 2019 by dean

Q: Are there any materials I can use with the strength of 17-4PH in the H1150 heat treat, but with better corrosion resistant properties. I have low levels of sulfuric acid and chlorides that seem to be attacking the 17-4 steel. A: The best choice for both extreme strength and … Continue reading →

Inconel bolts vs Alloy 330 at high temps

Posted on February 12, 2019 by dean

Q: I’m designing a furnace vent system for a continuous service high heat appliance (NFPA 211). The maximum furnace working temperature is 2100 deg F; design temperature is 2190 deg F. Will Alloy 330 or 310 SS bolts and nuts work for me? A: You are at the absolute limit … Continue reading →

Posted in FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged alloy 330 bolt strength, Alloy 330 bolts for high temperature, alloy 330 bolts high temperature resistance, Alloy 330 fasteners for high temperatures, Alloy 330 screws for high temperatures, alloy 330 screws high temperature resistance, Inconel 600 bolts for high temperatures, Inconel 600 fasteners for high temperatures, Inconel 600 high temperature resistance, Inconel 600 screws for high temperatures | Leave a comment

When NOT to Use Zirconium Bolts in Nitric Acid

Posted on January 30, 2019 by dean

Q: I’ve been using zirconium to handle a nitric acid solution but am still experiencing corrosion? I’m not sure why or if there is a better option? A: Zirconium bolts offer some of the best corrosion resistance to nitric acid as well as sulfuric acid and hydrochloric acid, even at … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged tantalum bolts nitric acid corrosion, tantalum bolts nitric acid resistanceis, tantalum fasteners nitric acid corrosion, tantalum fasteners nitric acid resistanceis, tantalum screws nitric acid corrosion, tantalum screws nitric acid resistanceis, zirconium bolts nitric acid corrosion, zirconium bolts nitric acid resistance, zirconium bolts oxidizing corrosion, zirconium fastemers nitric acid resistance, zirconium fasteners nitric acid corrosion, zirconium fasteners oxidizing corrosion, zirconium screws nitric acid corrosion, zirconium screws nitric acid resistance, zirconium screws oxidizing corrosion | Leave a comment

Inconel vs 310 Stainless Steel Bolts

Posted on January 23, 2019 by dean

Q: I have a high temperature application that can reach close to 1800F that requires not just corrosion resistance from low levels of acid and salt contamination, but I also need good strength. Would Alloy 310 bolts work? A: Alloy 310 bolts could be a possibility, depending on the strength … Continue reading →

Posted in Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alloy 625 bolts for high temperature corrosion resistance, Alloy 625 fasteners for high temperature corrosion resistance, Alloy 625 screws for high temperature corrosion resistance, Inconel bolts for high strength corrosion resistance, Inconel bolts for high temperature corrosion resistance, Inconel fasteners for high strength corrosion resistance, Inconel fasteners for high temperature corrosion resistance, Inconel screws for high strength corrosion resistance, Inconel screws for high temperature corrosion resistance | Leave a comment

Comparison of Salt Water Resistant Fasteners – Which is Best?

Posted on January 17, 2019 by dean

Salt water is great for swimming, but provides industry a wide range of corrosion challenges from marine vessels to desalination plants, and even off-shore oil. The good news is there are several materials that perform very well in these environments. This newsletter compares them on their salt water corrosion resistance … Continue reading →

Titanium Screws and Chlorides

Posted on January 14, 2019 by dean

Q: I’m dealing with a moderate chloride environment but my temperature can sometimes reach 450F. I’ve tried titanium bolts but am having some corrosion issues. Is there another material I can use? A: There are several potential choices but as the temperature increases the corrosion rate and aggressive nature of … Continue reading →

Titanium Bolts for Reverse Osmosis Saltwater Corrosion

Posted on January 7, 2019 by dean

Q: I’m working in a reverse osmosis facility that purifies seawater for drinking water. We are experiencing some corrosion in some of our valve attachments which I’m assuming is from the salt water. Any recommendations on a fastener that won’t corrode in these conditions? A: Your best bet would be … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged titanium bolts for salt water resistance, titanium bolts for seawater corrosion, titanium bolts for seawater resistance, titanium fasteners for salt water resistance, titanium fasteners for seawater corrosion, titanium screws for salt water resistance, titanium screws for seawater corroion, titanium screws for seawater resistance | Leave a comment

Inconel Bolt Fastening to Titanium in High Temperature

Posted on November 14, 2018 by dean

Q: I have an application in which I require a 1/2in-13 Hex bolt that will be in an inert gaseous environment at 500C. The bolt will be fastened to a Titanium Grade 5 nut. What material bolt would work best? A: I would suggest either Inconel 625 or Inconel 718 … Continue reading →

Tantalum Bolts vs Polymer Bolts for HCl

Posted on November 7, 2018 by dean

Q: We have on application in one HCL tank and we are using hastelloy bolts but they are not efficient. So I ask the quotation for material tantalum in metals or other material like PEEK, please advise what is the better solution. A: It depends on the temperature of the … Continue reading →

Posted in Application, Corrosion Resistance, Engineered Polymer Fasteners, FAQs, Specialty Metal Fasteners | Tagged Tantalum bolts for high temperature HCl, Tantalum bolts for high temperature hydrochloric acid, tantalum bolts for hydrochloric acid, Tantalum fasteners for high temperature HCl, tantalum fasteners for high temperature hydrochloric acid, tantalum fasteners for hydrochloric acid | Leave a comment

Overview of Extreme High Strength Fasteners

Posted on November 2, 2018 by dean

Extreme high strength fasteners made from advanced alloys allow industries such as aerospace, mining, and oil & gas to push the limits of what is possible. With requirements of ultimate tensile strengths beyond 200ksi this newsletter reviews these materials, their specific traits and niches. 17-4 PH Age hardened, 17-4PH … Continue reading →

TZM for High Strength Bolting for 1500F Vacuum

Posted on October 24, 2018 by dean

Q: I’m looking into a bolt which will be used to create vacuum seal with graphite and hold vacuum of 1 Pa. I’ve tried Inconel 718 but they seem to fail loosen at high temperatures, and my system requires 1500 F. Because I am trying to seal a vacuum system, … Continue reading →

Posted in Application, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Inconel 718 bolts for high temperature, Inconel 718 fasteners for high temperature, Inconel 718 screws for high temperature, TZM bolts for high temperature, TZM bolts for vacuum application, TZM fasteners for high temperature, TZM for vacuum application, TZM screws for high temperature, TZM screws for vacuum application | Leave a comment

How to Choose High Temp Oxidation Resistant Fasteners

Posted on October 3, 2018 by dean

From thermal processing and furnace applications to the extreme demands of aerospace, several high temperature alloys are available each with unique traits and capabilities. This brief newsletter will outline the primary fastener materials that are commonly used for excellent high temperature and oxidation resistance. Best High Temperature Oxidation Resistant Fasteners … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, Blog, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged 310SS bolts for cyclic conditions, 310SS cyclic conditions, 310SS screws for cyclic conditions, A286 bolts for oxidation resistance, A286 fasteners for oxidation resistance, A286 screws for oxidation resistance, Alloy 330 bolts for high temperature oxidation, Alloy 330 bolts for high temperature oxidation resistance, Alloy 330 bolts for high temperatures, Alloy 330 screws for high temperatures, Bolts for cyclic conditions, bolts for high temperature oxidation resistance, bolts for oxidation and caburization resistance, bolts for oxidation resistance, Fasteners for cyclic conditions, fasteners for high temperature oxidation resistance, fasteners for oxidation resistance, Materials for cyclic conditions, Screws for cyclic conditions, screws for high temperature oxidation resistance, screws for oxidation and caburization resistance, screws for oxidation resistance | 1 Comment

17-4PH Bolts Galling Solutions

Posted on September 4, 2018 by dean

Q: We are a manufacturer seeking a fastener for an air cooled engine’s head bolt replacement project. The fastener would be used to hold a aluminum cylinder head. We would like to use 17-4PH but are concerned about galling? A: As you would be using two different materials, the 17-4PH … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged 17-4PH anti-seize lubricant, 17-4PH bolts anti-seize lubricant, 17-4PH Bolts Galling, 17-4PH fasteners anti-seize lubricant, 17-4PH fasteners galling, 17-4PH screws anti-seize lubricant, 17-4PH screws Galling | Leave a comment

Brittle Ceramic Screws vs Molybdenum in Vacuum Furnaces

Posted on July 6, 2018 by dean

Q: We are using ceramic screws in one of vacuum furnaces, they’re breaking due to thermal stresses. There is lots of thermal cycling. Are their any less brittle materials we can use? The environment is low pressure with a max temperature of 1050C. Gases used in the system include: argon, … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Ceramics brittle in vacuum furnace, Ceramics vs Molybdenum in vacuum furnaces, High temperature bolts for vacuum furnace, High temperature fasteners for vacuum furnace, High temperature screws for vacuum furnace, Molybdenum bolts for vacuum furnace, Molybdenum fasteners for vacuum furnace, Molybdenum for vacuum furnace, Molybdenum screws for vacuum furnace | Leave a comment

Alloy 20 vs. Hastelloy C27 Bolt for H2SO4

Posted on June 27, 2018 by dean

Q: I have a hot sulfuric acid application that utilizes approximately 25-32% sulfuric acid. I really need a corrosion resistant bolt but due to the vastness of the operation, I’m wondering if there is a lower cost option than Hastelloy. A: For hot sulfuric acid in your concentration range, we … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged alloy 20 bolt for h2SO4, Alloy 20 bolts for sulfuric acid, alloy 20 fasteners for sulfuric acid, Alloy 20 for h2so4, Alloy 20 for sulfuric acid, alloy 20 screws for h2so4, alloy 20 screws for sulfuric acid, alloy 20 sulfuric acid corrosion, alloy 276 fasteners for sulfuric acid resistance, alloy C276 bolts for sulfuric acid resistance, alloy c276 screws for sulfuric acid resistance, Hastelloy bolts for sulfuric acid, hastelloy C276 for sulfuric acid resistance, hastelloy c276 screws for sulfuric acid resistance, Hastelloy fasteners for sulfuric acid, hastelloy screws for sulfuric acid, hastelloy sulfuric acid corrosion | Leave a comment

MP159 Screws for High Temperatures

Posted on June 19, 2018 by dean

Q: I’m in the testing phase of a new application that will require a high strength bolt that has a yield strength of about 220ksi. The biggest problem is that the bolts will also be exposed to burst of high temperature of about 1000F. Is there any material you can … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 High Temperature Fasteners, MP159 bolts for high strength, MP159 bolts for high temperature, MP159 fasteners for high strength, MP159 fasteners for high temperature, MP159 for high temperatures, MP159 hi temperature screws, MP159 high strength bolts, MP159 high strength fasteners, MP159 high strength screws, MP159 high temperature bolts, MP159 screws for high temperature | Leave a comment

Preventing Fastener Galling

Posted on June 12, 2018 by dean

Q: I’m having issues with thread galling. We’ve switch to coarse threads and tried to slow down installation speed/over-tightening. Any other ways we can prevent this? A: There are a few other things to consider in reducing thread galling. First, when possible use dissimilar metals with different hardness. Having material … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged anti galling lube, anti galling lubricant, anti seize lubricant, anti-seize lube, high temperature thread galling, high temperature thread galling prevention, moly disulfide, molybdenum, molybdenum disulfide, Thread galling, thread galling lube, thread galling lubricant, Thread galling prevention | Leave a comment

Duplex Bolt Corrosion

Posted on May 25, 2018 by dean

Q: I need some bolting to attach some surface steam piping for a power industry project. They’re using duplex bolts now but its showing some slight corrosion. Chlorides are involved and maybe some other contaminants. Ideas? A: Surface steam condensers and other power industry elements that are exposed to salts … Continue reading →

Hastelloy C276 Bolts or Duplex Bolts for Waste Water HCl Injection

Posted on May 21, 2018 by dean

Q: We’re making some changes in our waste water treatment process and are going to using hydrochloric acid (HCl) as a means of lowering the pH levels. Will I need to upgrade my duplex bolting? A: Assuming your waster water is at ambient temperatures the only thing you need to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Bolts for HCl Corrosion, C276 bolts for HCl corrosion, C276 bolts for hydrochloric acid, C276 bolts for hydrochloric acid corrosion, C276 bolts for hydrochloric acid corrosion resistance, C276 fasteners for hydrochloric acid corrosion, C276 fastners for HCl corrosion, C276 for HCl corrosion, C276 for hydrochloric acid corroion, C276 screws for HCl corrosion, Fasteners for HCl Corrosion, fasteners for hydrochloric acid corrosion, Hastelloy bolts for C276 bolts for hydrochloric acid corrosion, Hastelloy bolts for HCl corrosion, Hastelloy bolts for hydrochloric acid corrosion, Hastelloy FAsteners for HCl corrosion, HCl Corrosion, Screws for HCl corrosion | Leave a comment

Titanium or Hastelloy Bolts for Sulfuric Acid?

Posted on May 17, 2018 by dean

Q: I read that titanium regenerates a protective layer quickly in presence of water. Does that mean its okay to use it with sulfuric acid with steam present? A: Titanium fasteners are probably not the best solution for sulfuric acid but may work depending on your concentration and temperature. Titanium … Continue reading →

Posted in Application, Corrosion Resistance, Specialty Metal Fasteners | Tagged Alloy C276 for sulfuric acid, C276 bolts for sulfuric acid, c276 bolts for sulfuric acid corrosion resistance, c276 fasteners for sulfuric acid corrosion resistance, c276 for sulfuric acid resistance, c276 screws for sulfuric acid corrosion resistance, Hastelloy bolts for sulfuric acid, Hastelloy C276 for sulfuric acid, Hastelloy for sulfuric acid, sulfuric acid corrosion resistance bolts, sulfuric acid resistant bolts, sulfuric acid resistant fasteners, sulfuric acid resistant screws | Leave a comment

Monel K500 Bolt for Salt Water Corrosion

Posted on May 15, 2018 by dean

Q: We have some machinery operating in salt fog with sea spray as well. Salt corrosion is an issue but most importantly I need bolts with a yield strength over 100ksi. Any thoughts? A: For this environment you have two options. First, with a yield strength of 110ksi I’d suggest … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Alloy K500 for salt air corrosion resistance, Alloy K500 for salt air resistance, Alloy K500 for salt spray corrosion resistance, Alloy K500 for sea spray corrosion resistance, Monel for resistance to salt air corrosion, Monel for resistance to sea spray corrosion, Monel for resistance to seaspray corrosion, Monel for sea spray resistance, Monel for seaspray resistance, Monel K500 for sea spray corrosion resistance, Monel K500 for seaspray corrosion, Resistance to salt air corrosion, Resistance to sea spray corrosion, Resistance to seaspray corrosion | Leave a comment

Hastelloy C276 Bolts – Sulfuric Acid Condensation

Posted on May 11, 2018 by dean

Q: I have a situation where I’m not only dealing with a hot steam environment which can reach 700F but there is also sulfuric acid condensation that can form during cool down periods. Are their any materials that can handle heat and corrosion? A: Typically when dealing with sulfuric acid … Continue reading →

Hastelloy C276 Bolts for Sour Gas

Posted on May 10, 2018 by dean

Q: I’m having trouble with corrosion of our bolts in a sour gas well environment and we are currently using a super duplex stainless steel. Can you help me with a bolting material that would be improved? A: Hastelloy C276 bolts are ideal for sour gas environments and would be … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged bolts for H2S resistance, bolts for sour gas, bolts for sour gas resistance, C276 bolts for H2S, C276 bolts for H2S resistance, C276 bolts for sour gas, C276 for H2S resistance, C276 for sour gas, Hastelloy bolts for H2S, hastelloy bolts for sour gas, Hastelloy C276 for sour gas, Hastelloy for sour gas | Leave a comment

Coastal Marine Corrosion of Bolts

Posted on May 8, 2018 by dean

Q: I’m running a coastal power operation and am having some corrosion on my stainless steel bolts that are outside. Can salt air do that? And any suggestions on a material. I need high volume so I need to go with something economic. A: Salt air can cause corrosion. If … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged 2057 screws for salt corrosion, 2507 bolts for salt air corrosion, 2507 bolts for salt corrosion, Bolts for salt air corrosion, Duplex 2507 for salt air corrosion, Duplex 2507 for salt corrosion, Duplex Steel for Salt Air corrosion, fasteners for salt air corrosion, Screws for salt air corrosion | Leave a comment

Duplex Washers for Salt Corrosion and Magnetic Needs

Posted on April 30, 2018 by dean

I’m looking for a non-corroding and magnetic washer for use in a salt water environment. Specifically, we plan to weld this washer onto a 316 stainless basket so that it can be attached to a magnet. Currently we are using 302 stainless baskets, which are magnetic enough to attach to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Duplex washers for salt water resistance, magnetic washers, salt water resistant washers, seawater resistant washers, washers for resistance to salt water, washers for resistance to seawater, Washers for salt water corrosion, Washers for salt water corrosion resistance | Leave a comment

A286 Shoulder Bolts for High Temperature

Posted on April 13, 2018 by dean

Q: I need a shoulder bolt that will not change its shape at elevated temperatures. The bolt is near a mild carbon steel welding process and is under a small load. It is not in the heat affected zone, but it does see an elevated temperature. I am not sure … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged A286 bolts creep resistance, A286 bolts for high temperature, A286 fasteners creep resistance, A286 fasteners for high temperatures, A286 fasteners oxidation resistance, A286 for high temperatures, A286 shoulder bolts creep resistance, A286 shoulder bolts for high temperature | Leave a comment

Titanium Fasteners for Sea-Water & Galvanic Corrosion

Posted on April 9, 2018 by dean

Q: I need a salt water corrosion resistant screw that will work well to fasten an aluminum housing for deep sea equipment. I am concerned about galvanic corrosion. What material should I consider? A: Since you are using fasteners in an ocean environment and in contact with aluminum you have … Continue reading →

PEEK Screw Strength vs FDA Approved PTFE Screws

Posted on April 2, 2018 by dean

Q: I work in the food industry and need a larger sized polymer fastener sized 1/4-20 x 2.5″. I tried PTFE but it isn’t does not seem to have enough strength. It also needs to be FDA approved and offer moderate corrosion resistance. A: Not knowing the specific strength requirements … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners, Ultra Purity | Tagged FDA approved fasteners, FDA approved PEEK fasteners, FDA approved polymer fasteners, High strength polymer fasteners, high strength polymer screws, PEEK fasteners for high strength, PEEK fasteners for purity, PEEK for high strength, PEEK high strength fastener, PEEK high strength screws, PEEK Screws FDA approved, PEEK screws for high strength, PEEK screws for purity | Leave a comment

Inconel 625 vs Hastelloy C276 in Hydrochloric Acid (HCl)

Posted on March 29, 2018 by dean

Q: We are altering the chemicals we use to regulate the pH level of our manufacturing process with hydrochloric acid. I’m using some Inconel 625 bolting – will this work in the HCl too? A: Inconel 625 bolts offer a high level of corrosion resistance for many acids, may work … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Alloy 625 for HCl, Alloy 625 for hydrochloric acid, C276 bolts for HCl, C276 bolts for hydrochloric acid, C276 fasteners for HCl, C276 fasteners for hydrochloric acid, C276 for HCl, Hastelloy bolts for HCl, Hastelloy bolts for hydrochloric acid, Hastelloy Fasteners for HCl, Hastelloy fasteners for hydrochloric acid, Inconel bolts for HCl, Inconel bolts for hydrochloric acid, Inconel Fasteners for HCl, Inconel fasteners for hydrochloric acid | Leave a comment

Monel 400 Bolts in Seawater / Stress Corrosion Cracking

Posted on March 27, 2018 by dean

Q: I have some machinery exposed to salt water as well has drastic temperature swings. I’m concerned about corrosion but also a material that will become brittle. A: Monel 400 bolts are an excellent material for salt water corrosion protection and is a go-to material for many marine applications. As … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Monel bolts for high temperatures, Monel bolts for saltwater, Monel bolts for saltwater corrosion, Monel bolts for seawater, Monel bolts for subzero temperatures, Monel fastener for saltwater corrosion, Monel fasteners for seawater, Monel for seawater, Monel for stress corrosion craking | Leave a comment

High Temperature A-286 Fasteners vs Molybdenum fasteners

Posted on March 21, 2018 by dean

Q: I need some high temperature engine components that can provide high strength (100ksi yield) to 1000F as well as oxidation resistance? Are molybdenum bolts good for that? A: Though Molybdenum is excellent in high temperature environments its generally reserved for very high temperature vacuum application where no oxygen is … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged A286 bolts for high strength, A286 bolts for oxidation resistance, A286 Fasteners for high Strength, A286 for high strength, A286 High Temperature Fasteners, bolts for oxidation resistance, Fasteners for high temeprature oxidation resistance, fasteners for oxidation resistance, Molybdenum bolts for high temperature, Molybdenum fasteners for high temperature | Leave a comment

Titanium vs Monel bolts in stagnant salt water

Posted on March 20, 2018 by dean

Q: I’m dealing with a stagnant seawater situation. I’ve tried Monel 400 bolts because of its salt water resistance but am experiencing mild pitting corrosion. Any material that would fair better? A: Monel 400‘s only Achilles heel in terms of salt water situations usually occurs in stagnant waters where is … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Bolts for stagnant salt water, Bolts for stagnant sea water, Fasteners for salt water, Fasteners for stagnant salt water, FAsteners for stagnant sea water, Monel for salt water corosion, monel for seawater corrosion, salt water corrosion, Titanium for stagnant salt water, Titanium for stagnant sea water | Leave a comment

Monel Fastners for HF Contaminated Industrial Water

Posted on March 19, 2018 by dean

Q: I have a process where I’m experiencing corrosion from my industrial water system. I’ve tried Hastelloy C276 bolts but they are corroding much faster than I would expect. The water only has low levels of Hydrofluoric Acid (HF). Any ideas would be great. A: Hydrofluoric acid is an unusual … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged bolts for HF, bolts for hydrofluoric acid, fasteners for HF, fasteners for hydrofluoric acid, Monel bolts for HF, Monel bolts for hydrofluoric acid, Monel fasteners for HF, Monel fasteners for hydrofluoric acid, Monel for HF, monel for hydrofluoric acid corrosion, Monel for hydrofluoric acid resistance | Leave a comment

Titanium vs Super Duplex Bolts in Chlor-Alkali

Posted on March 15, 2018 by dean

Q: I’m running a chlor-alkali process and have been using Duplex 2507 bolts. I choose them for their yield strength and corrosion resistance but am still having issues with the chlorine. Ideas? A: Many chlor alkali processes use Titanium fasteners for its combination of high strength and chlorine resistance. Grade … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Bolts for chlor-alkali, Bolts for chlorine corrosion, chlor-alkali bolts, chlor-alkali fasteners, Chlorine corrosion, Duplex 2507 for chlor alkali, Duplex bolts for chlor alkali, Duplex for chlor alkali, Duplex Steel for chlor alkali, Fasteners for chlor-alkali, Fasteners for chlorine corrosion, Titanium bolts for chlor alkali, Titanium for chlor alkali | Leave a comment

High Temperature Bolting: Incoloy 800 & Inconel 600

Posted on March 14, 2018 by dean

Q: I’m running a high temperature ethylene process that will reach 750-850C. I need a fastener that is carburization and creep resistance. Also moderate corrosion can be an issue. Any suggestions on materials? A: This process is ideal for Incoloy 800H or 800HT bolting. These materials are designed for long-term … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged 17-4PH bolts, bolt for petrochemical, carburization resistant bolt, carburization resistant fastener, creep resistant bolt, creep resistant fastener, fastener for high temperature, fastener for petrochemical, Fasteners for high temperature furnace, high temperature fastener, high temperature oxidation resistance, Incoloy 800H bolts, Incoloy 800H fasteners, Incoloy 800HT bolts, Incoloy 800HT fasteners, oxidation resistant bolts, oxidation resistant fasteners | Leave a comment

Incoloy Bolts for High Temperatures

Posted on March 8, 2018 by dean

Q: I have a need for a high temperature bolts that will be used in continuous heat at about 1000F. Any suggestions? Also, will fluctuations in temperature cause breakage? A: One of the best materials for long-term continual exposure to high temperatures are Incoloy bolts. The Incoloy 800 series will … Continue reading →

Posted in Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Bolts for 1000F, Fasteners for 1000F, Fasteners for high temperature, High temperature bolts, high temperature fasteners, High temperature screws, Incoloy bolts for high temperature, Incoloy fasteners for high temperature | Leave a comment

High Strength Fasteners for Hydrochloric Acid (HCl)

Posted on March 5, 2018 by dean

Q: I’m in need of a high strength fastener that can withstand moderate concentrations of hydrochloric acid (HCl) 25%? Can I use Hastelloy Bolts? I need a bolt that can handle a yield of about 100ksi and temperatures around 100F. A: Hastelloy bolts are definitely ideal in this concentration of … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 925 for hydrochloric acid, Bolts for Hydrochloric acid, Hastelloy C276 in hydrochloric acid, Incoloy 925 bolts, Incoloy 925 bolts in hydrochloric acid, Incoloy for hydrochloric acid, Inconel, Inconel 718 bolts | Leave a comment

Titanium Grade 5 Screws for High Strength, Non-Magnetic Application

Posted on March 2, 2018 by dean

Q: I work in the fusion technology field, specifically in a plasma physics laboratory. We are currently using a large number of A-286 screws. The screws have to withstand the high pre-loads required to insure the ultra high vacuum tightness of our facilities (generating stresses in the screws of up … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged Grade 5 non-magnetic screws, non-magnetic bolts, non-magnetic metal screws, non-magnetic screws, Titanium screws for high strength, titanium screws for non-magnetic, titanium screws for non-magnetic applications | Leave a comment

17-4PH Bolts for Strength & Ductility

Posted on February 20, 2018 by dean

Q: Hello, I currently have an application that requires high strength set screws. One of our machines uses air cylinders with threaded shaft ends made of alloy steel set screws. The set screws are actually shearing off in our application, causing damage to the cylinders and equipment. I am looking … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged 17-4PH bolt yield strength, 17-4PH bolts, 17-4PH fastener yield strength, 17-4PH heat treated bolts, 17-4PH heat treated fastenres, 17-4PH strength, 17-4PH vs 316 strength, Strength of steel vs 17-4PH | Leave a comment

Monel 400 Bolts for Caustic Solutions?

Posted on February 20, 2018 by dean

Q: I’m using a caustic soda solution to remove sulfur in a petroleum refinery. The steel bolts are NOT cutting it. Any suggestions? I don’t have a huge budget, so I’m hoping I don’t need Hastelloy or Tantalum fasteners? A: Nope…You don’t need anything that highly priced. For this situation … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Monel bolts for caustic soda, Monel bolts for petroleum refinery, Monel for caustic soda, monel for caustic solutions, Monel for petroleum refinery, monel for reboilers, monel for stripping towers | Leave a comment

Alloy 20 Bolts for Sulfuric Acid (H2SO4)

Posted on February 20, 2018 by dean

Q: I’m running a cotton mercerizing process that is being altered to utilize sulfuric acid. I didn’t realize how corrosive using sulfuric acid (H2So4) is on my fasteners. Any ideas on how to protect my bolts. Not super hot, just corrosive. A: Alloy 20 bolts are a good choice for … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged alloy 20 bolts in sulfuric acid, Alloy 20 for sulfuric acid, Bolts for cotton mercerizing, Bolts for H2SO4, Bolts for Sulfuric acid, Fasteners for cotton mercerizing, Hastelloy for sulfuric acid | Leave a comment

Corrosion Resistant Fasteners for H2SO4 & Nitric Acid

Posted on February 14, 2018 by dean

Q: I’m producing nitrobenzene to be used in dye manufacturing. The nitrobenzene is prepared by the nitration of benzene with a mixture of concentrated sulfuric acid, water, and nitric acid. I’ve tried Hastelloy C276 but its not working so well. A: Hastelloy C276 works very well in sulfuric acid which … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged acid resistant bolts, acid resistant fasteners, fasteners for nitric acid, fasteners for nitrobenzene, fasteners for oxidizers, fasteners for sulfuric acid, Hastelloy C2000 for nitric acid, hastelloy C276 in nitric acid, hastelloy C276 in sulfuric acid | Leave a comment

Titanium or AL6XN Fasteners for Salt Water & Acids

Posted on February 12, 2018 by dean

Q: We’re setting up a salt brine application for a chemical project. There may be some minimal exposure to some acids. Can I uses titanium bolts? A: Titanium Gr2 and Titanium Gr5 (6Al-4V) fasteners are excellent for almost all salt related environments, but here since you may have exposure to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Al-6XN for salt brines, AL6xn chloride resistance, AL6XN for brines, AL6XN for salt brines, Fasteners for Salt brines, Fasteners for salt corrosion resistance, Titanium fasteners in salt brines, Titanium for salt bring | Leave a comment

Molybdenum bolts for high temperature furnace

Posted on February 7, 2018 by dean

Q: I’m hoping you can help me with a high temperature issue. I’m running an ammonia plant where gases, along with hot air are heated to temps of 1800-2000F. The secondary reformer unit is made of carbon steel with refractory lining. I need bolting that can survive these temps so … Continue reading →

Posted in Advanced Ceramic Fasteners, Application, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged alumina ceramic, ceramics for high temperture furnace, Fasteners for high temperature furnace, fasteners for vacuum furnace, Inconel 600, Molybdenum for vacuum furnace | Leave a comment

A-286 Bolts to Combat Stress Relaxing & Creep

Posted on January 31, 2018 by dean

Q: Hi, I need a 1.25” X 15” bolt that can operate in continuous temperatures of 1000F. Currently we are using a heat treated carbon based 4140 fabricated machined bolt. At these temps the bolts are “Stress Relaxing” and we are losing our clamping pressure. In addition, when we change … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged A286 bolts, bolt for creep resistance, bolt for high temperature, bolts to prevent stress relaxing, creep resistant bolt, Stress relaxing | Leave a comment

Bolts for Hydrofluoric and nitric acid: Hastelloy & Monel

Posted on January 26, 2018 by dean

Q: I’m running a chemical cleaning process on stainless steel to remove the oxides and to enrich the chromium depleted areas again surface. It’s an acid pickling process, where mixtures of hydrofluoric acid (HF) and nitric acid (HNO3) are used. I’ve tried Hastelloy C276 bolting on my tanks because I thought … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Alloy 400, Alloy C2000, bolts for acid pickling, bolts for HF, bolts for hydrofluoric acid, bolts for nitric acid, bolts for steel pickling, fasteners for acid pickling, fasteners for HF, fasteners for hydrofluoric acid, fasteners for nitric acid, fasteners for steel pickling, hastelloy C2000, Monel | Leave a comment

Difference between Waspaloy and Inconel 718 fasteners

Posted on January 24, 2018 by dean

I have a high temperature and strength application when would I choose Waspaloy bolts verses Inconel 718 bolts? Great question. Waspaloy and Inconel 718 bolts are both excellent in high temperature strength situations. In terms of strength, Inconel 718 has a edge over Waspaloy offering 210 ksi (ultimate tensile strength) … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged high strength bolt, high temperature bolt, Inconel 718 bolts, Inconel Bolts, Waspaloy bolts | Leave a comment

Hastelloy: Fasteners for phosphoric and sulfuric acid process

Posted on January 23, 2018 by dean

Q: I’m using a pretty corrosive wet process to produce phosphoric acid. It involves taking phosphate rock and the addition of concentrated (93%) sulfuric acid in a series of well-stirred reactor. Any ideas on bolting that won’t corrode my bolts and fasteners? A: Since your process is exposed to both … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Alloy C276, corrosion resistance, Hastelloy Bolts, Hastelloy C276, phosphoric acid, Phosphoric acid corrosion, Sulfuric Acid, Sulfuric Acid Corrosion | Leave a comment

Bolts for Steel Pickling in HCl: Hastelloy and Tantalum

Posted on January 22, 2018 by dean

Q: I’m using HCl in a pickling process and have used Hastelloy C276 bolts to protect my equipment but am still having corrosion issues. Any ideas? A: In pickling processes ferric chloride is created which is a strong oxidizer and most pickling process are at elevated temperatures – Hastelloy C276 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy C2000, Alloy C276, Hastelloy, Hastelloy Bolts, hastelloy C2000, Hastelloy C276, Hastelloy Screws, HCl, HCl Corrosion, Hydrochloric Acid, hydrochloric acid corrosion, Hydrochloric acid resistance, steel pickling | Leave a comment

Hastelloy C276 Fasteners for Flue Gas Desulfurization Scrubbers

Posted on January 18, 2018 by dean

Q: I’m operating a FGD (Flue Gas Desulphurization) plant and am experiencing some mild corrosion on my scrubber bolting. I’m currently using Incoloy 825 bolts. It’s mild corrosion but non-the-less I’d like to have it cleared up before I get additional issues. Any suggestions? A: Since scrubber liquids and gases … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 825, Alloy C276, FGD, FGD scrubber corrosion, FGD slurry corrosion, flue gas corosion resistance, flue gas desulfurization, Hastelloy C276, Incoloy 825, Inconel, Sulfuric Acid, Sulfuric Acid Corrosion, sulfuric acid protection | Leave a comment

Over-sizing nuts to compensate for coated bolts

Posted on January 8, 2018 by dean

Q: We have a corrosive application and we are debating on using coated carbon steel bolts and nuts or a solid corrosion resistant alloy. Obviously the coatings cost a lot less but we are unsure about how the coatings affect mechanical strength. A: Coated bolts and nuts are typically undersized … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Bolts, coated bolts, Corrosion, corrosion resistant bolts, nuts, over-sized nuts, over-sizing nuts | Leave a comment

Hastelloy vs Tantalum Bolts for Sulfuric Acid Corrosion in Lithium Extraction

Posted on January 3, 2018 by dean

Q: I’m running a lithium extraction process where a mineral called spodumene is roasted in a mixture of sulphuric acid (95-97%) at at about 150°C to form lithium sulfate. I’ve to use Hastelloy C276 for some process equipment but I’m still experiencing corrosion. Please help. A: Hastelloy C276 bolts typically … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy C276, H2SO4, Hastelloy, Hastelloy C276, high temperature H2SO4, high temperature sulfuric acid, hot acid corrosion, Hot Acids, Hot Sulfuric Acid, Lithium Extraction, spodumene, Sulfuric Acid, Sulfuric Acid Corrosion, tantalum | Leave a comment

Galvanic corrosion between Inconel fasteners and Monel in seawater

Posted on December 28, 2017 by dean

Q: I am considering using Inconel 718 fasteners with a Monel K-500 flange in seawater. I’m concered as Inconel is the more anodic of the two and is also has a smaller surface area. Would this cause galvanic corrosion? A: This is a great question. In this case if you plan … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 500, Alloy 718, Alloy K500, galvanic compatibility, Galvanic Corrosion, galvanic corrosion in seawater, Inconel, Inconel 718, Monel 500, Monel K500, seawater corrosion | Leave a comment

Hastelloy fasteners for HCL & H2SO4 in Municipal Waste Incinerator

Posted on December 27, 2017 by dean

Q: I’m running a municipal solid waste incinerator and am having trouble corrosion from a combination of hydrochloric acid and sulfuric acid that is derived from chloride and sulfur containing compounds in the waste fuel stream. I was using Duplex steel bolts for the chloride corrosion but they aren’t holding up … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged H2SO4 corrosion, HCk, HCl Corrosion, HCL resistance, Hydrochloric Acid, Hydrochloric acid resistance, incinerator corrosion, municipal solid waste incinerator, municipal waste, municipal waste incinerator, solid waste incinerator, Sulfuric Acid Corrosion, sulfuric acid corrosion resistance, Sulfuric Acid Resistance, waste incinerator | Leave a comment

Bolts for municipal waste incinerator: Hastelloy protects from HCl corrosion

Posted on December 12, 2017 by dean

Q: I’m running a municipal solid waste incinerator and am having trouble with corrosion from a combination of hydrochloric acid and sulfuric acid that is derived from chloride and sulfur containing compounds in the waste fuel stream. I was using Duplex steel bolts for the chloride corrosion but they aren’t holding … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy C276, Bolts, chloride condensation, H2SO4, Hastelloy, Hastelloy C276, HCl, Hydrochloric Acid, incinerator, municipal waste, Nickel Alloy, screws, solid waste incinerator, Sulfuric Acid, waste fuel stream | Leave a comment

Titanium bolts: Light weight fasteners that are stronger than aluminum

Posted on December 7, 2017 by dean

Q: I have a lightweight application that requires high strength. I’ve tried aluminum screws because I thought they were ultra lightweight but after breaking I increased my bolt size and now I have more weight and still breakage. No sure what to do. A: Yes aluminum is a lightweight material … Continue reading →

Posted in Application, FAQs, High Strength, Lightweight, Material, Specialty Metal Fasteners | Tagged 6AI-4V, High Strength, lighteight, Titanium, Titanium gr 5, Titanium Grade 5 | Leave a comment

Inconel & Alloy 330 bolts for high temperature strength

Posted on November 20, 2017 by dean

Q: My customer is having an issue with his stainless steel fastener bending. They are being used in a high-heat application running at approximately 1600F. Is this normal? Any ideas? A: This is definitely expected at these temperatures. If temperature and strength are you main focus, I would suggest either … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alloy 330, Alloy 600, High Strength, High Temperature, Inconel, Inconel 600 | Leave a comment

Hastelloy bolts for hydro-treating with sour gas – H2S

Posted on November 16, 2017 by dean

Q: I’m running a hydro-treating process that is running at 350-390°C where we’re producing H2S and NH3. Any ideas on a bolt that can handle the temperature and chemicals? A: In this type of process you having to deal with high temperatures and the formation of sulfuric acid (H2SO4) from the H2S especially … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alloy C276, H2S, Hastelloy, Hastelloy C276, Hydro-treating, NH3, Oil Corrosion, sour gas, Sulfuric Acid | Leave a comment

Duplex 2507 bolts for high strength application in salt air

Posted on November 15, 2017 by dean

Q: I have a high strength application that requires resistance to damp salt air and occasional sea splash, I’m using Monel 400 but it’s not holding up the the 75ksi of yield I need. Lots of broken bolts? Is is corrosion or strength? Thoughts? A: Your issue isn’t the corrosion. … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Alloy 400, Alloy K500, Corrosion, Duplex 2507, Duplex Steel, Monel, Monel 400, Monel K500, salt water, salt water corrosion, sea water corrosion, seawater | Leave a comment

AL6XN vs Monel bolts for salt water and marine use

Posted on November 14, 2017 by dean

Q: Is AL6XN a steel or nickel alloy? Trying to figure out if it would perform as well as Monel in seawater. A: To answer your first question, AL6XN bolts are actually both a nickel and a steel alloy. AL6XN is often described as a high nickel content stainless alloy. Though … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged AL-6XN, AL6XN, Alloy 400, Corrosion, Crevice Corrosion, Monel, Monel 400, pitting, pitting corrosion, salt water, salt water corrosion, sea water corrosion, seawater, stagnant salt water, stagnant water | Leave a comment

Incoloy 825 vs Hastelloy C276 for Sour Gas

Posted on November 13, 2017 by dean

Q: I need bolts for a well pump exposed to sour gas? I’ve currently use Incoloy 825 bolts which works reasonably well, but I’m wondering if there is a better choice that is more economical and could offer equal or better corrosion resistance – any ideas? A: A great nickel alloy bolt … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 825, Alloy C276, Corrosion, H2S, Hastelloy, Hastelloy C276, Incoloy, Incoloy 825, sour gas, sour gas well | Leave a comment

Bolt resistant to sodium hypochlorite with 80ksi yield strength

Posted on November 7, 2017 by dean

Q: I’m looking for guidance on fasteners with good resistance exposure to sodium hypochlorite. The material would need to be bleach-resistance, but also have a tensile yield strength of over 80ksi.

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners | Tagged bleach, bleach corrosion, sodium hypochlorite, Titanium, titanium gr 2, Titanium gr 5, Titanium Grade 2, Titanium Grade 5, waste water treatment | Leave a comment

Nickel Alloys Part 1: Moderate Corrosion

Posted on November 2, 2017 by dean

Nickel alloys are a special class of metals containing high levels of nickel (often greater than 20%). They play a key role in industry for their unique combination of high strength, corrosion resistance to harsh acids (like hydrochloric and sulfuric) and high temperature stability. This two-part newsletter will help summarize the distinct benefits of the … Continue reading →

Posted in Application, Blog, Corrosion Resistance, Material, Specialty Metal Fasteners | Tagged AL-6XN, AL6XN, Alloy 20, Alloy 400, Alloy K500, Carpenter 20, Corrosion, corrosion resistance, Monel, Monel 400, Monel K500, nickel, nickel alloys, Salt Water Resistance, Sea Water Resistance, Specialty Metals, Sulfuric Acid | Leave a comment

Hastelloy and Incoloy: Fasteners for Oil Field Corrosion

Posted on September 29, 2017 by dean

Oilfields are subjected to a diversity of corrosive elements including carbonic acids, sour gas (H2S), and fracking/stimulant acids such as hydrochloric and hydrofluoric acid. Naphthenic acids and simple organic acids are also found in crude oil extraction. In conjunction to acids, these environments contain sand and other abrasive elements which … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged fracking corrosion, Hastelloy, hastelloy C2000, Hastelloy C276, Hydrochloric Acid, Hydrochloric acid resistance, Hydrofluoric acid, Incoloy, Incoloy 825, Incoloy 925, oil & gas corrosion, Oil Corrosion, sour gas, sour gas well, sulfur corrosion, Sulfur corrosion resistance, sulfur-induced stress cracking | 1 Comment

High temperature bolt for sulfur & chloride gas corrosion resistance

Posted on September 6, 2017 by dean

Q: I have a high temperature application which is exposed to sulfur and chloride gasses. We’re operating at between 1200° and 1400°F. Any suggestions on a bolt material to consider? A: To deal with both sulfuric/chloride atmospheres as well as high temperatures, you may want to consider Incoloy 800HT bolts … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alloy 600, Alloy 800, Alloy 800HT, Chloride corrosion resistance, creep resistance, creep resistance High Temperature Bolt, high temperature fastener, Incoloy, Incoloy 800, Incoloy 800HT, Inconel, Inconel 600, Sulfur corrosion resistance | Leave a comment

Choosing a Specialty Material Hose Clamp

Posted on August 29, 2017 by dean

Special Fasteners China. offers hose clamps in Titanium and Hastelloy C276. This newsletter overviews the two styles available – worm drive and medium duty – as well as highlight what materials are best for your application. Titanium Grade 2 hose clamps are in stock and available in the sizes shown here. Hastelloy C276 hose clamps are custom made to order … Continue reading →

Posted in Blog, Corrosion Resistance, Lightweight, Specialty Metal Fasteners | Tagged Acid resistant hose clamp, Alloy C276, Corrosion resistant hose clamp, Hastelloy, Hastelloy C276, Hose clamp, Medium duty hose clamp, Titanium, Titanium Gr2, Titanium Grade 2, Worm drive, Worm drive hose clamp | Leave a comment

Corrosion resistance of Inconel 625 bolts vs Hastelloy C276

Posted on August 28, 2017 by dean

Q: Inconel 625 and Hastelloy C276 bolts seem to have similar Nickel content. Does this mean these fasteners will perform the same in a corrosive environment? A: Inconel 625 and Hastelloy C276 bolts do offer similar corrosion resistance but Hastelloy C276 has a slight edge in many acidic environements, especially … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Acid, Acidic, Acids, Alloy 625, Alloy C276, Corrosion, corrosion resistance, H2SO4, Hastelloy, Hastelloy C276, HCl, Hydrochloric Acid, Inconel, Inconel 625, Oxidizing, Sulfuric Acid | Leave a comment

Alloy 20 fasteners for sulfuric acid corrosion

Posted on August 23, 2017 by dean

Q: I’m working with boiling sulfuric acid and tried Alloy 20 for some of my bolting but am having corrosion. I’m confused as I thought that is what they are best for. Any suggestions. A: You are right Alloy 20 does typically perform very well in sulfuric acid and even … Continue reading →

Posted in Application, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 20, Alloy 20 Fasteners, Corrosion, H2SO4, H2SO4 corrosion, Hastelloy, Hastelloy C276, Hastelloy Fasteners, Inconel, Inconel 625, Inconel Fasteners, Sulfuric Acid, Sulfuric Acid Corrosion, tantalum | Leave a comment

Incoloy 925 bolts for sour gas & chloride application

Posted on August 16, 2017 by dean

Q: I have down hole application containing sour gas and high chloride levels. The temperature the bolts are exposed to is around 150F and I’m having trouble with cracking. I tried Super Duplex 2507 but am still having issues. Any ideas? A: Super Duplex 2507 does provide good resistance to … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy 925, chloride corrosion, Duplex, Duplex 2507, H2S, Incoloy, Incoloy 925, sour gas, Stress Corrosion Cracking | Leave a comment

Yield strength difference between MP35N and A286 bolts

Posted on August 14, 2017 by dean

Q: I need high yield strength material what is the difference between MP35N and A286? Which is more economic? A: Overall MP35N is perhaps the highest yield strength bolt material available to industry with a typical yield of 250 ksi compared to A286’s 111 ksi; though it is extremely expensive. A286 … Continue reading →

Posted in Application, FAQs, High Strength, Specialty Metal Fasteners | Tagged A-286, A286, MP35N | Leave a comment

Bolt for hot hydrogen sulfide, CO2, hydrocarbons & salt water

Posted on August 9, 2017 by dean

Q: I need a material that will be suitable for oil and gas use. Submersion in hydrogen sulfide, carbon dioxide, hydrocarbons, salt water at temperatures up to 325F. Crevice corrosion has been a factor. Also need 170ksi min tensile strength. Plus we’d like to torque a 3/8-24 fastener to 50 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners, Uncategorized | Tagged Alloy 718, bolt torque, Crevice Corrosion, hydrogen sulfide, Inconel, Inconel 718, oil & gas, salt water corrosion, sour gas | Leave a comment

Lightweight fastener stronger than aluminum

Posted on August 3, 2017 by dean

Q: I needed a lightweight fastener and tried aluminum but it can’t come close to sustaining the weight of my application. Can you suggest anything compatibly light weight that is stronger? A: Titanium mass is about 50% less than steel however when compared to aluminium is still about 60% heavier. … Continue reading →

Posted in Application, Lightweight, Specialty Metal Fasteners | Tagged Aluminum, Grade 5 Titanium, lightweight, Titanium, Titanium gr 5 | Leave a comment

Fastener for cyrogenic application

Posted on August 3, 2017 by dean

Q: I need to attach an LNG cryogenic pump and need to make sure I use a material that can withstand temperatures of –120 °F as well as don’t embrittle when fluctuating back to room temperature. Any suggestions? A: Monel K500 is a common choice for cyrogenic fasteners. It can … Continue reading →

Posted in Application, FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners, Uncategorized | Tagged Alloy 500, Alloy K500, Cryogenic, Monel, Monel K500, non-magnetic, Spark Resistant | Leave a comment

Most Common of Hastelloy Fasteners Reviewed

Posted on July 25, 2017 by dean

Hastelloy alloys have long been the gold standard of corrosion resistant bolts; only out performed by metals like Zirconium and Tantalum. This family of high performance nickel alloys can handle strong acids like hydrochloric, sulfuric, acetic, formic and phosphoric acids, yet each grade actually exhibits its own strengths in dealing with specific acids and niche environments. … Continue reading →

Posted in Blog, Material, Specialty Metal Fasteners, Uncategorized | Tagged Alloy B3, Alloy C2000, Alloy C22, Alloy C276, Boiling Acid, Corrosion, H2SO4, Hastelloy, Hastelloy B3, hastelloy C2000, Hastelloy C22, Hastelloy C276, HCl, Hot Acids, Hydrochloric Acid, nickel alloys, oxidizers, Oxidizing, Sulfuric Acid | Leave a comment

Hastelloy C276 bolts in hot sulfuric acid

Posted on July 12, 2017 by dean

Q: I was planning on using Hastelloy C276 in hot sulfuric acid. It would be approximately 50% concentration around 100F +/- 10 degrees. Will this be okay? I’m just concerned because I read that it cannot handle strong oxidizing environments and I’ll be using it in an application where its … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy C22, Alloy C276, Corrosion, ferric chloride, H2SO4, Hastelloy, Hastelloy C22, Hastelloy C276, Hot Sulfuric Acid, Nitric Acid, Oxidizer, Oxidizing, Sulfuric Acid | Leave a comment

Screws for high velocity salt water with debris

Posted on July 10, 2017 by dean

Q: I have a salt water environment with high velocities and a lot of debris including sand, dirt and particles. Because of the amount of debris, I’m concerned about what material would work best. A: Both Monel and Titanium can be good choices in this situation. Both perform extremely well … Continue reading →

Posted in Application, Corrosion Resistance, Specialty Metal Fasteners | Tagged Corrosion, erosion, high velocity seawater, Monel, Monel 400, Monel K500, rapid seawater, salt water, seawater, Titanium, titanium gr 2, Titanium gr 5, Titanium Grade 2, Titanium Grade 5 | Leave a comment

Titanium bolt for sodium hypochlorite corrosion

Posted on July 5, 2017 by dean

Q: I’m using sodium hypochlorite to control slime and bacteria formation in a power plant water system. It’s in about a 15% solution. I tried using Duplex fasteners thinking they are good with chlorides but I’m having corrosion issues. Any suggestions? A: I think the problem you have is the fact … Continue reading →

Posted in Application, Corrosion Resistance, Material, Specialty Metal Fasteners | Tagged chloride corrosion, Duplex, Duplex 2205, Duplex 2507, Gr 2, Gr5 oxidizer, hypochlorites, oxide film, Super Duplex, Titanium, Titanium Grade 2, Titanium Grade 5 | Leave a comment

Hastelloy C22 bolts for hydrochloric acid steel pickling

Posted on June 21, 2017 by dean

Q: We are running a steel pickling process are considering switching from a sulfuric acid process to hydrochloric acid. Our system currently uses Inconel 625 bolting. With this be sufficient? A: Inconel 625 is a good material for acid corrosion but for large system of hydrochloric acid, especially with the … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged C22, Hastelloy, Hastelloy C22, HCl, Hydrochloric Acid, Inconel, Inconel 625, metal pickling, steel pickling, tantalum | Leave a comment

Embrittlement of Tantalum bolts at high temperatures

Posted on June 8, 2017 by dean

Q: I chose Tantalum bolts for their corrosion resistance and high temperature capabilities and they are breaking. I’m running an application that fluctuates between 350 Celcius where there could be concentrated sulfuric acid contamination. I thought these would be excellent with high temperature acid exposure. Can you help me? I … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Embrittled, Embrittlement, Inert Gas, Oxygen, tantalum, vacuum | Leave a comment

Duplex 2507 bolts for salt air corrosion resistance

Posted on June 6, 2017 by dean

Q: I’m working on a structural project that not submerged in salt water but exposed to moist salt air. I’m not only concerned about the supports having fasteners that won’t corrode but also having a fastener that is high strength. Any suggestions. A: Though I don’t know the specific strength … Continue reading →

Posted in Application, FAQs, High Strength, Material, Specialty Metal Fasteners | Tagged Duplex, Duplex 2205, Duplex 2507, Duplex Steel | Leave a comment

Zirconium fasteners exposed to downstream oxidizers

Posted on May 25, 2017 by dean

Q: I’m using zirconium fasteners in a sulfuric acid process but they are showing corrosion. I’m not sure why as I’m well below boiling and only using 40% concentration. There may be some downstream contaminants, but not much. Any ideas? A: It is most likely the contaminants that are causing … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy 625, Alloy C22, Alloy C276, C22, C276, Corrosion, corrosion resistance, Ferric chlorides, H2SO4, Hastelloy, Hastelloy C22, Hastelloy C276, Inconel, Inconel 625, oxidizers, oxidizing media, Sulfuric Acid, tantalum, Zirconium | Leave a comment

Duplex bolts in sea water contaminated steam turbine

Posted on May 24, 2017 by dean

Q: I’m running a steam surface condenser which is installed on a steam turbine in a thermal power station. I’m using sea water that could be contaminated with chemical pollutants cooling water side of the condenser. Any ideas on a good fastener for the tubes and water boxes? A: Duplex 2205 … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged AL6XN, Alloy 2205, chloride corrosion, Corrosion, Crevice Corrosion, Duplex, Duplex 2205, High Temperature, pitting corrosion, salt water corrosion, Steam condenser, steam surface condenser, Stress Corrosion Cracking | Leave a comment

Tantalum vs Monel fasteners in hydrogen fluoride

Posted on May 22, 2017 by dean

Q: I’m using hydrogen fluoride used in a manufacturing process to make refrigerants. I know it’s very corrosive and have tried both hastelloy and inconel fasteners, which I thought were super corrosion resistant. What am I doing wrong because the acid is still eating them? Should I try Tantalum? A: … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged aeration, Alloy 400, Fluoride layer, Fluoride passive layer, Hastelloy, HF, Hydrofluoric acid, Monel, Monel 400, oxidizing salts, tantalum | Leave a comment

Duplex 2507: Bolts for geothermal drilling exposed to sulfur and salt

Posted on May 20, 2017 by dean

Q: I’m working on a on a geothermal energy drilling project. Carbon steel we’re currently using to bolt drilling components is failing from corrosion. We have corrosive an environment with high levels of sulfur and salt, as well as temperatures to 260C. Any suggestions? A: Super Duplex 2507 is often used … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Alloy 2507, Crevice Corrosion, Duplex, Duplex 2507, Geothermal drilling, geothermal exploration, geothermal well, Hastelloy, Inconel, pitting corrosion, SCC, Stress Corrosion Cracking, Super Duplex, Super Duplex 2507 | Leave a comment

Best bolts for Inconel 625 flanges

Posted on May 18, 2017 by dean

q: What bolting material should be used with Inconel 625 flanges? We used ASTM A193 Gr B7 however noticing some corrosion issues. A: This is a very common problem but to answer it accurately, it depends on the environment that your flanges see and also to a certain extent what … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Alloy 625, Alloy 718, B7, Corrosion, flange, Galvanic Corrosion, Inconel, Inconel 625, Inconel 718 | Leave a comment

Inconel bolts vs. Monel bolts. What’s the difference? Which is better?

Posted on May 11, 2017 by dean

They rhyme, are both used in extreme environments, and are both nickel metal alloys, but Monel and Inconel are actually very different. But how? Let’s start with basic chemistry. Monel is a nickel-copper alloy and Inconel is a nickel-chromium alloy. So what does that mean for your extreme application? We … Continue reading →

Posted in Application, Blog, Corrosion Resistance, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alloy 400, Alloy 625, Corrosion, hastelloy C2000, High Temperature, Hydrofluoric acid, Inconel, Inconel 625, Monel, Monel 400, saltwater corrosion, sea water corrosion | 1 Comment

Tantalum bolts for hot phosphoric acid

Posted on May 2, 2017 by dean

Q: I’m running a semiconductor wet chemical etching process that utilizes 85 % phosphoric acid at around 150-160°C. I need a material that can withstand this process. Super Duplex hex bolts are not cutting it. A: At that particular concentration and temperature high performance nickel alloys like Hastelloy C276 bolts … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged Alloy C276, C276, chemical etching, Hastelloy, Hastelloy C276, phosphoric acid, Semiconductor, tantalum, Zirconium | Leave a comment

Hastelloy C22 fasteners used in wet chloride

Posted on May 1, 2017 by dean

Q: I have a waste water purifying situation where I’m using chlorine to treat the water. In addition to the acidic solution produced the fastener will also experience high loads, so I’m also concerned with stress corrosion cracking. Currently Super Duplex 2507 is not doing the job. Any recommendations on … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Strength, Specialty Metal Fasteners | Tagged Alloy C22, C22, Crevice Corrosion, ferric chloride, Hastelloy C22, pitting corrosion, Stress Corrosion Cracking, Tensile Strength, wet choride | Leave a comment

Duplex 2205 and Hastelloy fasteners in pulp & paper digester

Posted on April 27, 2017 by dean

Q: We have a pulp & paper digester that is used to cook wood chips in an alkaline solution. The fasteners will be exposed to high temperatures and abrasive conditions. Any suggestions? A: Without knowing the specifics of your process, I can make two general material suggestions. Duplex 2205 fasteners are … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, High Temperature Resistance, Material, Specialty Metal Fasteners | Tagged alkaline, Alloy 2205, Alloy C276, Chlorides, Crevice Corrosion, Digester, Duplex 2205, Duplex Steel, Hastelloy, Hastelloy C276, pitting corrosion, Pulp & Paper, Pulp & paper digester, Stress Corrosion Cracking | Leave a comment

Titanium grade 5 bolts for lightweight robotic application

Posted on April 25, 2017 by dean

Q: I have a robotic application where I need a fastener that is both lightweight and strong. Also, the style of the fastener needs to provide a wide clamping area in a low clearance area. Any suggestions? A: A material you might consider is Titanium, grade 5. The most common … Continue reading →

Posted in Application, FAQs, High Strength, Lightweight, Specialty Metal Fasteners | Tagged button head cap screw, grade 2, grade 5, low clearance fastener, low clearance screw, pan head screw, socket driver, Titanium, Titanium Grade 2, Titanium Grade 5 | Leave a comment

Hastelloy B2 vs B3 bolts: Whats the difference?

Posted on April 13, 2017 by dean

Q: Is there any advantage of using a Hastelloy B3 fastener over a B2 fastener? A: Both Hastelloy B2 and B3 fasteners provide good resistance to non-oxidizing acids, such as hydrochloric acid and sulfuric acid. The only advantages of Hastelloy B3 fasteners over B2, is that they offer enhanced thermal stability … Continue reading →

Posted in Application, Corrosion Resistance, FAQs, Material, Specialty Metal Fasteners | Tagged Alloy B2, Alloy B3, corrosion resistant, cupric salt, ferric salt, Hastelloy, Hastelloy B2, Hastelloy B3, Hydrochloric Acid, oxidizing media, Sulfuric Acid | Leave a comment

Molybdenum screws temperature limit explained

Posted on April 11, 2017 by dean

Q: I saw on your high temperature chart that Molybdenum is listed twice. I’m confused, which high temperature should I use? A: Both high temperatures are accurate, depending on the situation where you are using Molybdenum fasteners. Molybdenum screws can be used up to 2912F only if it is used … Continue reading →

Posted in FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Fasteners, molybdenum, screws, vacuum | Leave a comment

Difference between Incoloy 825 and 925 bolts

Posted on April 11, 2017 by dean

Q: What is the difference between Incoloy 825 and 925 bolts? A: Bolts made from Incoloy 925 are precipitation hardened version of Incoloy 825 bolts. What this means is it is put through a heat treatment process which hardens the alloy at the atomic level. Basically Incoloy 925 bolts offers similar … Continue reading →

Posted in FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged 825, 925, Incoloy | Leave a comment

Difference between Monel 400 and Monel K500 bolts

Posted on April 10, 2017 by dean

Q: I’m currently using Monel 400 hex head bolts in salt water. Should I be using K500? What’s the difference? A: Basically, Monel K500 is a precipitation hardened version of Monel 400. This means the material goes through a heat treating process that changes the alloy’s structural matrix to increase its tensile and … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged 400, Bolts, K500, Monel, salt water, sea water | Leave a comment

Titanium vs Monel: Bolts for stagnant sea water

Posted on April 7, 2017 by dean

Q: I have a seawater application where the water can be stagnant or polluted. Is Monel bolts the best choice? A: For stagnant seawater application we would usually suggest Titanium over Monel fasteners. Although Monel is very resistant to saltwater, it can experience pitting corrosion in stagnant water situations. There have … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Corrosion, Monel, seawater, Titanium | Leave a comment

Usable temperature limit of Inconel 718 bolts

Posted on April 7, 2017 by dean

Q: What is the highest temperature I could use Inconel 718 bolts? A: Inconel 718 fasteners could be used reliably up to about 1300F. Because Inconel 718 is heat treated or age hardened at 1325F, going beyond 1300F will significantly affect its strength properties. Furthermore, its strength may not fully return. … Continue reading →

Posted in FAQs, High Strength, High Temperature Resistance, Specialty Metal Fasteners | Tagged High Temperature, Inconel 718 | Leave a comment

Fastener Thread Galling: What Is It & How to Prevent It?

Posted on March 28, 2017 by dean

Thread galling is a common yet a seldom understood fastener problem seen by engineers and fabricators. It occurs when pressure and friction cause bolt threads to seize to the threads of a nut or tapped hole. The fasteners are not just overly tight but “cold/contact” welded together.

Posted in Blog, Material, Specialty Metal Fasteners | Tagged Bolts, cold welding, Fasteners, galling, screws, threads | Leave a comment

Best uses for a threaded flange

Posted on March 24, 2017 by dean

Q: When do you recommend to use a threaded flange? I need a flange that can be changed easily & frequently. A: After speaking with the customer, I found out that he has a pilot plant where he will be frequently changing parts. In this case a threaded flange is … Continue reading →

Posted in Corrosion Resistance, FAQs, High Strength, High Temperature Resistance, Lightweight, Non-Conductive, Specialty Metal Fasteners, Ultra Purity, Uncategorized | Tagged dangerous application, flammable application, flange, pilot process, small pipe diameters, tapered pipe thread, threaded flange | Leave a comment

Calculating bolt break force or yield

Posted on March 22, 2017 by dean

Q: How do I calculate the actual break force or yield of a bolt for a particular size? A: The Ultimate Tensile properties for a material like Hastelloy C276 is independent of the size of the bolt, as its based on the x-sectional area of the bolt which typically … Continue reading →

Posted in FAQs, High Strength, Specialty Metal Fasteners | Tagged Break Force, Tensile Strength, UTS, Yield Strength | Leave a comment

When to use a lap joint flange

Posted on February 13, 2017 by dean

Q: When is it best to use a lap joint flange? A: Lap joint flanges are good for very expensive materials like tantalum and zirconium and other specialty alloys like Hastelloy or Inconel due to reduced cost of sleeve vs solid flange. Lap joint flanges are unique in that they … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Lap Joint Flange | Leave a comment

Difference between ziconium and zirconia fasteners

Posted on February 8, 2017 by dean

Q: What is the difference between Zirconia and Zirconium? A: Zirconia is a ceramic made from ZrO2 and Zirconium (Zr) is a refractory metal element found on the periodic table. So while Zirconia is made from Zirconium they are VERY different.

Posted in Advanced Ceramic Fasteners, FAQs, Specialty Metal Fasteners, Uncategorized | Tagged Zirconia, zirconia fastsener, Zirconium, zirconium fastener, ZrO2 | Leave a comment

MP35N bolts for high strength application

Posted on February 8, 2017 by dean

Q: We need advice on a material that will deliver a tensile strength of 210 to 250 ksi, as well as help us protect against galling. The attaching areas are stainless steel Grade 8. A: For this instance, we would suggest MP35N. This alloy was developed specifically for high … Continue reading →

Posted in FAQs, Specialty Metal Fasteners, Uncategorized | Tagged cold welding, galling, MP35N, MP35N bolt, MP35N Fastener, MP35N screw, Stainless Steel | Leave a comment

Bolts for high temperature vacuum furnace: Metal vs. Ceramic

Posted on February 8, 2017 by dean

Q: I’m using a high temperature vacuum furnace at 2500F. What type of material do you suggest using and is there any advantage of using a metal over a ceramic? A: Under vacuum conditions with little to no oxygen present, there are some metallic options for fasteners which include … Continue reading →

Posted in Advanced Ceramic Fasteners, FAQs, High Temperature Resistance, Specialty Metal Fasteners | Tagged Alumina, alumina ceramic, alumina fastener, ceramic, Ceramic Fasteners, low thermal conductivity, molybdenum, molybdenum bolt, Molybdenum Fasteners, quenching, tantalum, tantalum bolt, tantalum fastener, tantalum scew, vacuum, vacuum furnace, ziconia fastener, Zirconia, zirconia ceramic | Leave a comment

Are Alloy 330 bolts magnetic?

Posted on February 8, 2017 by dean

Q: Is Alloy 330 Magnetic? A: Though alloy 330 does contains iron and chromium, it also contains nickel. The nickel component is what helps to strengthen the protective qualities of the chromium however, the presence of nickel also makes this metal non-magnetic. The reason is that the presence of … Continue reading →

Posted in FAQs, Non-Conductive, Specialty Metal Fasteners | Tagged Alloy 330, Chromium, Magnetic, nickel, non-magnetic, Stainless Steel | Leave a comment

Galvanic corrosion using Inconel bolts

Posted on February 8, 2017 by dean

Q: Can dissimilar (also called galvanic) corrosion occurs between Inconel bolts and regular carbon steel? A: Anytime you have dissimilar materials you have the potential for galvanic corrosion. For this to happen the materials need to be wet or in some kind of solution. If they are dry it’s … Continue reading →

Posted in Corrosion Resistance, FAQs, Specialty Metal Fasteners | Tagged Carbon Steel, Corrosion, corrosion resistant, Galvanic Corrosion, Inconel, Inconel 625, Inconel 718, thread corrosion | Leave a comment

17-4 PH

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Nuts

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Threaded Rod

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254 SMO

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310SS

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AL6XN

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A-286

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Alloy 20

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Alloy 330

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Alloy 926

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Aluminum 7075

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Duplex Steel

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Threaded Rod

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Hastelloy

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Threaded Rod

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Incoloy

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Threaded Rod