Blind Flange, Raised Face, 3/4 in Nominal Pipe Size, Flanged x Blind, 4 5/8 in Flange Outside Diameter, 9/16 in Flange Thickness, 4 5/8 in Overall Length, Steel, Black Coated, Class Class 600, For Pipe Schedule 80, 1,450 psi Maximum Operating Pressure, 1,450 psi Max. Steam Pressure, 80 Degrees to 780 Degrees F, Number of Bolt Holes 4, 5/8 in Bolt Hole Diameter