3b thread class right-hand 20 thread quantity per inch 2 slots on periphery, 90 deg to axis, 180 deg apart, 0.062 in. w, on 1.375 in. dia cut, 0.100 in. from top phosphate zinc surface treated
0.441" hole diameter 0.8025" outside diameter 0.139" material thickness chamfer located on flat side at hole 0.03125 in. porm 0.010 in. lg by 45 deg passivate surface treated convex