MS20067A (NOTICE 1), MILITARY SPECIFICATION: KEY, MACHINE, SQUARE IN CROSS-SECTION, ONE END SQUARE, OTHER END ROUND (21 JUN 1999) [SUPERSEDED BY NASM20067]
MS20067A (NOTICE 1), MILITARY SPECIFICATION: KEY, MACHINE, SQUARE IN CROSS-SECTION, ONE END SQUARE, OTHER END ROUND (21 JUN 1999) [SUPERSEDED BY NASM20067].