2a thread class right-hand 0.307" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.557" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class right-hand 0.224" thread length hexagon head style 40 thread quantity per inch oxide screw surface treated without internal drive unjf thread series
3a thread class right-hand 0.283" thread length hexagon head style 36 thread quantity per inch oxide screw surface treated without internal drive unjf thread series
3a thread class right-hand 0.397" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unjc thread series