0.8900" overall length flange end out of round, distance across wrenching flats 0.6100 in. min, 0.6300 in. max, internally thd 0.3750 in. dia, 24 thd per in., unf series class 3 fit, 0.2500 in. lg, outside corner of thd hole chamfered 0.0200 in. min, 0.0400 in. max, 45.0 angle, inside corner chamfered 0.0465 in. min, 0.0600 in. max, 30.0 angle cadmium surface treated 22c solid, external flange one end