MS21450, MILITARY STANDARD: NUT, SELF-LOCKING, EXTENDED WASHER, HEXAGON, REDUCED HEXAGON, C'BORE (22 JAN 1988) [NO SUPERSEDING DOCUMENT]
MS21450, MILITARY STANDARD: NUT, SELF-LOCKING, EXTENDED WASHER, HEXAGON, REDUCED HEXAGON, C'BORE (22 JAN 1988) [NO SUPERSEDING DOCUMENT].