MS20066A (NOTICE 1), MILITARY SPECIFICATION: KEY, MACHINE, SQUARE IN CROSS-SECTION, BOTH ENDS SQUARE (29 FEB 1996) [SUPERSEDED BY NASM20066]
MS20066A (NOTICE 1), MILITARY SPECIFICATION: KEY, MACHINE, SQUARE IN CROSS-SECTION, BOTH ENDS SQUARE (29 FEB 1996) [SUPERSEDED BY NASM20066].