3a thread class right-hand 0.500" thread length undercut pan no. 2 head style 20 thread quantity per inch ritical item hydrogen embrittlement relief required zinc surface treated unc thread series
3a thread class right-hand 0.500" thread length undercut pan no. 2 head style 24 thread quantity per inch critical item hydrogen embrittlement relief required zinc surface treated unc thread series
3a thread class right-hand 0.375" thread length undercut pan no. 2 head style 32 thread quantity per inch ritical item hydrogen embrittlement relief required zinc surface treated unc thread series
3a thread class right-hand 0.375" thread length undercut pan no. 2 head style 32 thread quantity per inch itical item hydrogen embrittlment relief required zinc surface treated unc thread series