0.625" hole diameter 1.990" outside diameter 0.050" material thickness 1.945 in. dia counterbored an additional 0.065 in. deep by 0.542 in. w passivate surface treated recessed
1.141" hole diameter 1.922" outside diameter 0.047" material thickness 4 holes 0.140 in. dia equally spaced 90 degrees on 1.437 in. bolt circle chromate surface treated recessed