4.7282" overall length short end shaft 2/7/16-20 unf 2a rh thd 0.5000 in. lg, relief groove 0.3620 in. min, 0.3720 in. max dia, 0.0938 in. w on short end, long end shaft flatted 0.0312 in. full length fan
3b thread class right-hand 1.7800" overall length 0.2500" bore diameter 28 thread quantity per inch inspection hole in shank, with lubrication fitting cadmium all external/exposed metal surfaces surface treated single row, concave rollers unjf thread series