MIL-S-851D (AMENDMENT 1), MILITARY SPECIFICATION: STEEL GRIT, SHOT, AND CUT WIRE SHOT; AND IRON GRIT AND SHOT-BLAST CLEANING AND PEENING (30 AUG 1990) [S/S BY SAE-J1993, SAE-J827, SAE-J444, AND SAE-J441]., This amendment forms a part of MIL-S-851D, dated 21 April 1989, and is approvedfor use by all Departments and Agencies of the Department of Defense.