3a thread class right-hand 0.970" thread length flat chamfer head style 20 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand 0.229" thread length headless (setscrew) head style 40 thread quantity per inch cadmium fastener surface treated unjc thread series
3a thread class right-hand 0.063" thread length headless (setscrew) head style 32 thread quantity per inch navy special project cadmium fastener surface treated unjc thread series