3a thread class right-hand 0.162" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.277" thread length flat countersunk undercut head style 56 thread quantity per inch passivate screw surface treated unjc thread series
3a thread class right-hand 0.176" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.338" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.338" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series