Material aluminum alloy, qq-a-20013; finish anodise black, mil-a-8625, cl 2, type 2, epoxy polyamide primer, mil-p-23377, black lusterless paint, fed standard 595, white lusterless epoxy polamide, mil-c-22750; pie shaped w/120 degrees angle offset 0.157 in., angle radius 0.156; o/a diameter 0.750 in.; 1 hole 4-40 unc 2b, 0.156 in. Deep; 1 hole 0.047 in. Dia, 0.156 in. Deep; 1 hole 0.650 to 0.680 in. Dia, 0.344 in. Deep
