MS51971B (AMENDMENT 1), MILITARY SPECIFICATION: NUT, PLAIN, HEXAGON-STEEL, CORROSION RESISTING, 300 SERIES, PASSIVATED, UNC-2B (20 FEB 1996)

MS51971B (AMENDMENT 1), MILITARY SPECIFICATION: NUT, PLAIN, HEXAGON-STEEL, CORROSION RESISTING, 300 SERIES, PASSIVATED, UNC-2B (20 FEB 1996)., This amendment forms a part of MS51971B, dated 28 January 1969, and is approved for use by all Departments and Agencies of the Department of Defense.