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 5965-00-455-7581
NSN 4140-01-312-2361
NSN 6135-00-583-3966
NSN 6650-01-103-7342
NSN 5905-00-981-2125
NSN 6650-01-124-4314
NSN 6610-00-141-7000
NSN 2925-00-159-0337
NSN 5998-00-396-1231
NSN 6610-01-282-6747
NSN 2925-00-428-6349
NSN 7035-00-585-2113