Special Fasteners China. & Fastener offers fasteners per ASTM F468 specification. This spec pertains to bolts, hex cap screws, socket head cap
screws, and studs for general use. It covers the requirements for commercial wrought nonferrous bolts, hex cap screws, and studs 0.250 to 1.500 in. and socket head cap screws (including socket head cap, button head and flat countersunk head configurations) with nominal thread 0.06 (size 0) through 1.500 in. inclusive in diameter manufactured from a number of alloys in common use and intended for general service applications. ASTM F468 includes nickel alloys such as Hastelloy, Inconel, and Monel, as well as several grades of titanium.