0.1150" first hole diameter 0.7710" overall length 4 grooves 90 deg apart in face of flange, oil hole in body required tocut internal spiral groove, dim, for internal spiral groove, 0.0620 in. w, 0.0450 in. min, 0.0500 in. max deep, 0.0300 in. min, 0.0320 in. max bottom radias 22c solid, external flange one end