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 6650-01-625-8688
NSN 6610-01-012-9566
NSN 5905-00-905-5308
NSN 5998-00-408-3762
NSN 5950-00-791-5890
NSN 6130-00-960-9158
NSN 5915-00-857-9188
NSN 6620-01-627-0478
NSN 7035-01-158-7673
NSN 5935-01-091-4593
NSN 4140-01-076-3720
NSN 6145-01-504-7128