Material: type 4, ih specification a-31 part i, sae grade 8
A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends with threads of the same nominal diameter. The maximum diameter of the unthreaded portion must not be greater than the nominal thread diameter plus 0.020 inches (0.508 mm). The unthreaded portion must be without locking or wrenching provisions. It may be thread relieved. See also rod, threaded end and rod, continuous thread.
NSN 6110-01-125-6654
NSN 5999-00-394-7191
NSN 5996-01-262-1442
NSN 5910-00-197-8920
NSN 5910-01-551-8720
NSN 6135-00-297-8873
NSN 6135-01-265-1384
NSN 5895-01-193-8884
NSN 6240-01-073-4487
NSN 5950-01-205-2757
NSN 5945-00-580-0873
NSN 6685-01-406-2919