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 6220-01-474-5682
NSN 6620-01-293-6009
NSN 4140-01-399-2472
NSN 6620-01-201-4177
NSN 6105-01-197-2901
NSN 5895-01-067-7276
NSN 6105-00-212-4793
NSN 6220-01-549-0259
NSN 5905-01-122-3179
NSN 6645-01-440-5500
NSN 5985-01-582-7440
NSN 6145-01-120-3364