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 5975-01-619-5305
NSN 6150-01-413-8987
NSN 5915-01-564-6722
NSN 4140-01-361-9198
NSN 5996-01-435-4390
NSN 6220-01-200-2275
NSN 6135-00-851-8575
NSN 6650-00-161-4122
NSN 5925-00-192-9630
NSN 6150-01-167-1827
NSN 7035-01-519-8227
NSN 6650-00-953-9511