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 5996-00-497-3809
NSN 4140-01-457-8583
NSN 6145-00-899-6306
NSN 6105-01-286-1321
NSN 5960-01-563-6975
NSN 5999-00-392-5193
NSN 6105-01-222-6583
NSN 5920-01-629-2858
NSN 6685-00-738-2525
NSN 6645-01-102-2321
NSN 6610-00-575-7933
NSN 6620-01-168-8450