MS51984 (NOTICE 1), MILITARY STANDARD: NUT, PLAIN, CONE SEAT, HEXAGON: WHEEL MOUNTING, 1/2 INCH (21 SEP 1992) [NO SUPERSEDED DOCUMENT].
MS51984 (NOTICE 1), MILITARY STANDARD: NUT, PLAIN, CONE SEAT, HEXAGON: WHEEL MOUNTING, 1/2 INCH (21 SEP 1992) [NO SUPERSEDED DOCUMENT].