MS9921, MILITARY STANDARD: SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, STEEL AMS 6322, CADMIUM PLATED, 0.138-40 UNJF-3A (15 AUG 1969) [NO SUPERSEDING DOCUMENT].
MS9921, MILITARY STANDARD: SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, STEEL AMS 6322, CADMIUM PLATED, 0.138-40 UNJF-3A (15 AUG 1969) [NO SUPERSEDING DOCUMENT].