MS9730 (NOTICE 1), MILITARY STANDARD: SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, PD SHANK, CRES AMS 5643, .138-40 UNJF-3A (21 OCT 1991) [NO SUPERSEDING DOCUMENT].
MS9730 (NOTICE 1), MILITARY STANDARD: SCREW, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, PD SHANK, CRES AMS 5643, .138-40 UNJF-3A (21 OCT 1991) [NO SUPERSEDING DOCUMENT].