5306-00-182-1916 (AN3H15)
NSN 5306-00-182-1916 (NIIN 00-182-1916) 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 AN3H15 (Aeronautical Standards Group Dept Of, CAGE 88044); also referenced as B6812 (Military Specifications).
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), $3.26 gov standard price.