3b thread class 32 thread quantity per inch shoulder under 1st flange 0.090 in. minand 0.110 in. max thk passivate surface treated flange unf thread series
3b thread class right-hand 0.588" thread length 20 thread quantity per inch internal thd 0.5000-20; top of insert identified by one dash mark; four locking keys paced 90.0 deg apart passivate surface treated grooved keylock unjf thread series
