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 5855-00-973-5717
NSN 6150-00-470-2702
NSN 6620-01-152-0936
NSN 5998-01-388-2388
NSN 6135-00-321-6707
NSN 5990-01-532-0670
NSN 5945-00-615-9218
NSN 5895-01-014-7053
NSN 5835-00-518-2740
NSN 5925-01-038-6177
NSN 4140-00-913-9374
NSN 6220-01-150-3128