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 6685-00-058-1316
NSN 5998-00-633-5169
NSN 6105-01-168-8335
NSN 6105-01-014-5444
NSN 6645-01-429-6768
NSN 5996-00-522-6410
NSN 5999-00-007-1706
NSN 5975-01-249-2244
NSN 5950-01-157-0625
NSN 6685-01-428-7618
NSN 5996-00-900-4001
NSN 6610-01-285-4673