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 5920-01-185-2222
NSN 6645-00-292-0093
NSN 2925-00-698-4882
NSN 6145-01-449-1343
NSN 5925-00-839-0293
NSN 6240-01-642-8377
NSN 6135-01-604-8739
NSN 5975-01-099-4695
NSN 5996-00-343-4411
NSN 5999-00-899-0805
NSN 6645-00-068-3536
NSN 5855-00-885-8452