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 6240-01-459-0902
NSN 6110-00-097-0617
NSN 6645-00-570-8472
NSN 6320-01-547-2743
NSN 6240-01-584-6774
NSN 6135-00-461-3590
NSN 5925-01-317-9328
NSN 6150-00-647-0717
NSN 6135-01-185-3614
NSN 5985-01-348-7222
NSN 6240-01-255-2417
NSN 6685-01-608-2187