MS51972A (NOTICE 1), MILITARY STANDARD: NUT, PLAIN, HEXAGON-STEEL, CORROSION RESISTING, 300 SERIES, PASSIVATED, UNF-2B (06-JUN-1988)

MS51972A (NOTICE 1), MILITARY STANDARD: NUT, PLAIN, HEXAGON-STEEL, CORROSION RESISTING, 300 SERIES, PASSIVATED, UNF-2B (06-JUN-1988)., MS51972A, datd 29 June 1969, has been rwiewed and determined to be valid for use in acquisition.