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 4140-01-432-1424
NSN 5975-00-028-0122
NSN 5985-00-484-5132
NSN 5965-00-529-0602
NSN 5960-01-237-2336
NSN 6145-00-001-6754
NSN 6240-01-363-3810
NSN 5935-01-529-6522
NSN 6110-01-384-5857
NSN 6110-01-080-1193
NSN 6105-00-121-0404
NSN 6150-00-304-7342