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 6145-01-288-2154
NSN 5925-00-837-0149
NSN 5855-01-576-4223
NSN 6620-01-651-5425
NSN 5910-01-266-5126
NSN 5920-01-462-9839
NSN 2925-01-027-1293
NSN 5996-01-502-8978
NSN 6130-00-762-9106
NSN 5910-01-192-1848
NSN 6620-01-275-9777
NSN 5920-00-607-3385