0.3125" first hole diameter 3.4375" overall length counterbord both ends, 2.1220 in. min, 2.1230 in. max dia, right end 0.1875 in. deep, left end 0.2812 in. deep, surface finish of counterbore 125 microinches, 1 lug on outside surface, 0.3750 in. wide by 0.5000 in. long, height, 1.6875 in. from center of bore 18c solid, external flanges both ends
