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 5990-00-777-0413
NSN 5965-01-552-6545
NSN 4140-01-462-1336
NSN 6620-01-085-8688
NSN 5945-00-280-1567
NSN 6320-01-145-9013
NSN 5975-01-576-9733
NSN 2925-01-257-0695
NSN 6650-00-710-8130
NSN 6685-01-450-5493
NSN 5925-01-332-3266
NSN 6320-01-089-9086