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 6150-01-030-8740
NSN 6320-01-309-9595
NSN 6645-01-480-0662
NSN 6650-01-583-1215
NSN 5930-01-568-8503
NSN 5996-01-193-3220
NSN 5945-00-009-2362
NSN 5950-01-506-4694
NSN 6650-01-179-9349
NSN 6685-00-276-9889
NSN 5895-00-592-1929
NSN 6135-01-496-5810