MS9206A, MILITARY STANDARD: SCREW, MACHINE-STEEL, DIFFUSED NICKEL-CADMIUM PLATED, DOUBLE HEXAGON EXTENDED WASHER HEAD, .138-40 UNJF-3A (27 MAY 1988).
MS9206A, MILITARY STANDARD: SCREW, MACHINE-STEEL, DIFFUSED NICKEL-CADMIUM PLATED, DOUBLE HEXAGON EXTENDED WASHER HEAD, .138-40 UNJF-3A (27 MAY 1988).