0.351" hole diameter 0.812" outside diameter 0.031" material thickness navy special project 36 internal straight serrated teeth, 0.375 in. min major dia, 0.351 in. min 0.352 in. max minor dia passivate surface treated key
0.627" hole diameter 1.000" outside diameter 0.052" material thickness key is raised 0.140 in. above washer thickness from thd od phosphate surface treated key
0.390" hole diameter 0.580" outside diameter 0.050" material thickness w/third external key, prebent, 135 degrees from other external keys, 0.110 in. wide, 0.156 in. long cadmium surface treated key