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 5985-01-370-8509
NSN 6220-01-167-7859
NSN 6105-01-113-5045
NSN 6645-01-457-8642
NSN 7035-00-270-5519
NSN 7035-01-314-7559
NSN 6145-01-107-3275
NSN 6130-00-954-2859
NSN 4140-01-059-8730
NSN 5998-01-422-4928
NSN 4140-00-580-2742
NSN 5925-01-162-8577