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 6130-01-258-5642
NSN 5999-00-814-6532
NSN 6105-01-585-3556
NSN 5950-01-659-9470
NSN 5920-01-578-7055
NSN 6105-01-557-4372
NSN 5915-01-148-4899
NSN 5985-01-553-2304
NSN 5935-00-242-6491
NSN 6645-01-381-2050
NSN 6620-01-656-1896
NSN 6220-00-700-3450