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 5950-00-203-5621
NSN 6145-01-261-5150
NSN 6320-00-284-1524
NSN 5905-00-110-3236
NSN 5999-01-534-7592
NSN 5950-00-633-8366
NSN 6645-01-194-3214
NSN 6610-01-400-3880
NSN 6220-01-501-7221
NSN 5855-01-415-3987
NSN 5960-00-032-9715
NSN 2925-00-660-8131