The ultimate temperature resistant polymer

Polyimide bolts or Vespel(R) bolts are made from an advanced temperature resistant polyimide resin. Polyimide bolts or Vespel bolts offer a unique balance of mechanical, thermal, and chemical properties for outstanding performance in a variety of demanding applications such as automotive, machinery, industrial equipment, aerospace, and semiconductor equipment.

Polyimide bolts or Vespel bolts also have the unique combination of properties such as excellent mechanical strength and toughness, exceptional radiation resistance, robust chemical resistance to many solvents, a low coefficient of thermal expansion, excellent creep resistance and flame retardance.

Polyimide bolts or Vespel bolts are available in both metric and standard sizes. Contact us to learn more about polyimide bolts or Vespel bolts properties and availability.

Bolt Types Available: Hex Bolts

 


Vespel Hex Head Bolt Features and Benefits

It is important to differentiate between a Vespel hex head bolt and hex head cap screw. Often people assume they are the same, but they are actually very different fasteners in terms of how they are manufactured, as well as from an application perspective. Regardless of your choice, Vespel hex heads offer strong, stable joints because of their large head service. 

The Hex Comparison

Hex Head Bolts

Hex Head Cap Screw
  • Hex bolts have a flat end and lack the washer face under the head.
  • Appropriate for when mechanical properties are more important than dimensional tolerances.
  • Features flat washer facing under the bolt head.
  • Also called a finished hex bolt. 
  • Has tighter tolerances on the body dimensions. 
  • Best used for precise applications where tight tolerances on the body dimensions are required. 

 


 

Vespel Properties

Vespel Properties     

Vespel Mechanical Data

 Vespel Tensile Data


Chemical Resistant Vespel bolts

Vespel Corrosion Data

 

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