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 5999-00-334-0136
NSN 5975-00-155-7065
NSN 5975-01-502-5503
NSN 6645-01-136-0562
NSN 5920-00-874-1155
NSN 6105-00-411-8585
NSN 6105-01-398-1088
NSN 6220-00-214-1655
NSN 5975-01-488-4232
NSN 6220-00-436-0692
NSN 6145-01-544-7237
NSN 5996-00-438-3154