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 4140-01-498-2651
NSN 2925-00-881-3770
NSN 5950-01-497-5480
NSN 6105-00-305-1362
NSN 7035-00-585-2113
NSN 5990-01-465-3088
NSN 5855-01-505-1442
NSN 5960-01-229-3817
NSN 5990-00-932-3070
NSN 6620-00-113-5900
NSN 5925-00-999-6032
NSN 6620-01-200-6493