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 5998-01-508-8237
NSN 6645-00-089-8842
NSN 6145-00-188-3657
NSN 6620-00-809-4283
NSN 5975-00-134-2674
NSN 7035-01-227-7492
NSN 5905-00-684-4999
NSN 2925-01-496-4699
NSN 5999-01-583-7475
NSN 7035-01-524-2706
NSN 5855-00-862-3345
NSN 5965-00-728-6734