3material steel, 3.875 in. O/a length, flange 9.250 in. Diameter 0.625 in. Wide, 8 holes 0.562 in. Diameter equally spaced on 7.938 in. Diameter bolt circle, 3.750 in. Diameter body od, 1.156 in. Diameter through hole, body end cbore 2.750 in. Dia, flange end cbore 1.750 in. Dia