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 5895-00-893-6057
NSN 6110-00-698-7526
NSN 6220-00-898-7311
NSN 5905-01-546-4478
NSN 6240-01-619-0531
NSN 6105-01-529-5705
NSN 6240-00-660-8849
NSN 6650-01-648-9915
NSN 5965-00-225-1848
NSN 6240-01-352-3642
NSN 6130-01-376-8469
NSN 6105-00-715-5517