MS9893, MILITARY STANDARD: SCREW, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, AMS 5616, .164-36 UNJF-3A (21 APR 1969)
MS9893, MILITARY STANDARD: SCREW, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, AMS 5616, .164-36 UNJF-3A (21 APR 1969).