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 5975-01-302-6335
NSN 6610-01-255-3258
NSN 6685-00-233-6563
NSN 6620-01-323-7620
NSN 5996-01-461-8320
NSN 4140-01-378-2651
NSN 5905-01-079-5117
NSN 6145-00-152-6499
NSN 5930-00-518-2738
NSN 6145-01-545-9926
NSN 5835-00-216-4568
NSN 5920-00-683-7883