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 6220-00-632-6469
NSN 5920-00-964-3874
NSN 5930-01-104-6461
NSN 5855-01-260-7445
NSN 5985-01-038-5516
NSN 6130-00-553-5160
NSN 5975-01-628-9118
NSN 5925-00-199-9565
NSN 6645-01-368-7109
NSN 6645-01-486-4305
NSN 6220-01-440-2889
NSN 6685-00-455-1058