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 4140-00-896-9602
NSN 5895-00-290-6501
NSN 6620-01-524-0583
NSN 5930-00-594-1312
NSN 6240-00-170-5302
NSN 7035-01-612-9719
NSN 5895-00-740-7461
NSN 6135-01-433-2062
NSN 5965-01-339-4495
NSN 5930-00-686-9533
NSN 6645-01-175-9875
NSN 4140-01-264-7466