5306-00-141-4712 (6812)
NSN 5306-00-141-4712 (NIIN 00-141-4712) is a machine bolt in Federal Supply Class 5306, Bolts — an externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. Manufacturer part number 6812 (National Aerospace Standards, CAGE 80205); also referenced as B6812 (Military Specifications); AN4C71A (National Aerospace Standards).
Key specs: finished head; 26 rockwell c minimum and 32 rockwell c maximum overall hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $209.52 gov standard price.