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 6650-01-218-2028
NSN 5855-01-389-8884
NSN 5965-01-378-7335
NSN 5835-00-409-5666
NSN 5915-01-654-0965
NSN 4140-01-013-2536
NSN 5985-01-578-0380
NSN 6130-01-615-2212
NSN 6645-01-421-6909
NSN 5915-01-437-6516
NSN 6620-00-172-9222
NSN 4140-00-225-8586