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 6645-01-616-5662
NSN 5998-00-548-9387
NSN 6220-01-401-5337
NSN 6130-01-218-0559
NSN 6320-01-271-0247
NSN 5925-00-369-1596
NSN 5925-00-374-2528
NSN 5996-00-853-2852
NSN 5985-01-631-3956
NSN 5990-01-414-7618
NSN 6610-01-199-7371
NSN 6135-01-526-6530