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 6150-00-188-2958
NSN 6130-00-220-2151
NSN 5985-00-554-7428
NSN 5920-01-519-8835
NSN 5950-01-644-4709
NSN 7035-01-396-3343
NSN 5915-00-520-8468
NSN 6650-00-231-7843
NSN 7035-01-027-2259
NSN 5975-00-482-6334
NSN 5915-00-513-3505
NSN 5855-01-100-3272