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 6650-01-645-0735
NSN 5945-01-014-7989
NSN 7035-01-371-0091
NSN 5835-00-834-1286
NSN 6620-01-330-7357
NSN 6145-01-657-1558
NSN 5965-00-465-9566
NSN 5950-01-472-2467
NSN 5960-00-220-9717
NSN 5920-01-465-2184
NSN 5930-00-144-4994
NSN 5915-00-882-4845