Steel, 2.000 in. Lg, 2.000 in. W, 0.875 in. Thk, 1.000 in. Raised face of, 0.406 in. Raised face h, center hole internally thd, 0.250 in.-18, npt, rh thd, 0.406 in. Thd lg, four unthd mtg holes, 0.656 in. Diameter equally spaced 1.719 in. By 1.719 in. Between centers, chamfere corners, 0.156 in. By 45 deg