MIL-S-851D, MILITARY SPECIFICATION: STEEL GRIT, SHOT, AND CUT WIRE SHOT; AND IRON GRIT AND SHOT-BLAST CLEANING AND PEENING (21 APR 1989) [S/S BY SAE-J1993, SAE-J827, SAE-J444, AND SAE-J441]., This specification covers cast iron or hardened cast steel grit and shot for blastcleaning of castings, forgings, ship hulls and decks, or other parts prior to use for the removal ofsand, slag, rust, and marine incrustations; and also cast iron or hardened cast steel shot, or cutsteel wire shot for peening the surface of metals.