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 5999-01-444-2091
NSN 5960-00-948-1487
NSN 5835-01-351-8429
NSN 6130-01-634-0603
NSN 6645-01-281-7254
NSN 6130-00-232-7617
NSN 6620-01-243-5281
NSN 5960-00-467-7400
NSN 5945-01-058-3552
NSN 6685-00-847-4075
NSN 2925-00-853-5039
NSN 6650-01-315-6485