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 6320-01-582-6668
NSN 6610-00-199-8915
NSN 6220-01-582-7524
NSN 6610-01-309-5361
NSN 5925-01-142-5819
NSN 5920-01-186-0963
NSN 5990-00-578-6254
NSN 5985-01-334-2588
NSN 5960-01-123-9553
NSN 5999-01-251-5108
NSN 5950-01-158-6076
NSN 5835-00-974-4014