MS21043D (NOTICE 1), MILITARY STANDARD: NUT, SELF-LOCKING, 800 DEG. F, REDUCED HEXAGON, REDUCED HEIGHT, RING BASE, CORROSION RESISTANT STEEL (09 OCT 1991) [SUPERSEDED BY NASM21043]
MS21043D (NOTICE 1), MILITARY STANDARD: NUT, SELF-LOCKING, 800 DEG. F, REDUCED HEXAGON, REDUCED HEIGHT, RING BASE, CORROSION RESISTANT STEEL (09 OCT 1991) [SUPERSEDED BY NASM21043].