Flange, Lap Joint, 1 in Nominal Pipe Size, Flanged x Lap-Joint, 4 7/8 in Flange Outside Diameter, 11/16 in Flange Thickness, 1 1/16 in Overall Length, Stainless Steel, 316/316L, Class Class 300, 720 psi Maximum Operating Pressure, 300 psi Max. Steam Pressure, Number of Bolt Holes 4, 3 1/2 in Bolt Circle Diameter, 3/4 in Bolt Hole Diameter