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 5998-01-336-9605
NSN 6685-01-544-5277
NSN 6220-00-835-5026
NSN 6240-01-046-2677
NSN 4140-01-626-3827
NSN 5915-01-396-4711
NSN 5910-00-715-7966
NSN 5950-01-022-4428
NSN 6130-01-648-7670
NSN 5960-01-580-6360
NSN 5855-01-461-9207
NSN 4140-00-956-9225