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 4140-01-555-7788
NSN 5950-01-190-8109
NSN 6150-01-215-5692
NSN 5975-01-288-9624
NSN 5925-01-272-6780
NSN 5915-01-379-2942
NSN 5950-01-155-9564
NSN 6220-01-019-7606
NSN 5999-01-079-7515
NSN 6620-01-367-2597
NSN 5945-00-342-2196
NSN 6320-00-218-6105