MS20068A (NOTICE 1), MILITARY SPECIFICATION: KEY, MACHINE, SQUARE IN CROSS-SECTION, BOTH ENDS ROUND (29 FEB 1996) [SUPERSEDED BY NASM20068]
MS20068A (NOTICE 1), MILITARY SPECIFICATION: KEY, MACHINE, SQUARE IN CROSS-SECTION, BOTH ENDS ROUND (29 FEB 1996) [SUPERSEDED BY NASM20068].