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 6645-00-922-8312
NSN 6220-00-054-5094
NSN 5915-00-696-5475
NSN 6685-00-157-3289
NSN 6620-01-412-7426
NSN 5895-01-212-2145
NSN 5999-01-417-5978
NSN 5965-01-144-3001
NSN 6620-00-575-9230
NSN 6320-01-564-0893
NSN 6110-00-295-2754
NSN 6645-01-033-5051