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 5945-00-619-3553
NSN 6650-01-467-2355
NSN 6220-01-644-2483
NSN 6130-01-555-8062
NSN 5910-00-069-9969
NSN 4140-00-616-1347
NSN 5925-01-650-2652
NSN 6130-00-339-4232
NSN 6645-01-601-5473
NSN 5855-01-201-4857
NSN 5910-01-487-6757
NSN 6650-01-248-2591