Magnesium alloy per qq-m-55, cir-cular shape w/1.480 in. Radius cutout w/flats to outer edge, 1.090 in. Rad- ius inner rim, 0.600 in. Dp, 0.060 in.Thk, 2.180 in. Inside dia, 0.136 in. Diameter holes 2 places w/0.089 in. Diameter tap, 0.112 in.-40 threads, 2.400 in. Cen-ter-to-center hole across dia, 0.780 in. Center hole to flats
