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 5950-00-621-6158
NSN 6145-01-634-0388
NSN 6150-00-181-1711
NSN 6150-01-283-7945
NSN 5975-01-087-8641
NSN 5855-00-951-6483
NSN 4140-01-127-4674
NSN 5935-00-215-8672
NSN 7035-00-574-4223
NSN 4140-01-568-9532
NSN 6650-00-307-3437
NSN 5895-01-051-5885