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 5975-00-290-4285
NSN 5950-01-360-2014
NSN 6620-01-310-0216
NSN 5910-01-645-9825
NSN 5990-00-316-8872
NSN 6220-01-579-8402
NSN 6220-01-120-6398
NSN 6145-01-529-9831
NSN 5895-01-090-8810
NSN 4140-01-546-3367
NSN 2925-01-264-1699
NSN 6685-01-020-3842