Rockwell hardness on stud end
A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends on which the nominal diameter of one threaded section is greater than the other. The unthreaded section must have more than one diameter, none of which may be larger than the maximum major diameter of the larger thread. It may be thread relieved. Excludes items with tapered threads.
NSN 2925-01-148-5810
NSN 5985-00-740-7154
NSN 6105-01-628-6283
NSN 6620-01-633-8443
NSN 6220-00-935-6881
NSN 2925-01-397-2495
NSN 6320-01-082-2970
NSN 4140-00-057-5597
NSN 6110-01-443-3279
NSN 6645-01-620-4837
NSN 5985-01-416-8624
NSN 6145-01-007-8870