3b thread class 24 thread quantity per inch self tapping; pilot dia 0.505 in. min 0.510 in. max; 3 holes 0.146 in. min 0.166 in. max spaced 120 deg apart on periphery cadmium surface treated plain unf thread series
3b thread class right-hand 1.150" thread length 16 thread quantity per inch has internal thread lock feature. passivate surface treated grooved keylock unjf thread series
