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 5895-01-375-4607
NSN 5915-01-340-7502
NSN 5925-00-811-2973
NSN 5945-01-376-3897
NSN 6645-00-491-0462
NSN 6685-00-237-4138
NSN 5920-01-624-6973
NSN 6685-01-072-0858
NSN 6320-00-036-3688
NSN 6620-00-006-1915
NSN 5950-00-246-5277
NSN 6620-01-384-2105