MS9187C (NOTICE 1), MILITARY STANDARD: SCREW, MACHINE-CRES, DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, .138-40 (21 OCT 1991) [NO SUPERSEDING DOCUMENT].
MS9187C (NOTICE 1), MILITARY STANDARD: SCREW, MACHINE-CRES, DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, .138-40 (21 OCT 1991) [NO SUPERSEDING DOCUMENT].