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 6650-01-431-9625
NSN 6650-00-804-2039
NSN 5999-01-507-1306
NSN 6620-01-527-4423
NSN 6620-01-212-4298
NSN 5990-00-513-5328
NSN 5998-01-260-6810
NSN 4140-01-652-5057
NSN 6645-00-819-5045
NSN 5985-01-166-8291
NSN 5895-01-075-0751
NSN 5975-01-296-0124