MS21450 (NOTICE 1), MILITARY STANDARD: NUT, SELF-LOCKING, EXTENDED WASHER, HEXAGON, REDUCED HEXAGON, C'BORE (17 APR 1997) [NO SUPERSEDING DOCUMENT]
MS21450 (NOTICE 1), MILITARY STANDARD: NUT, SELF-LOCKING, EXTENDED WASHER, HEXAGON, REDUCED HEXAGON, C'BORE (17 APR 1997) [NO SUPERSEDING DOCUMENT].