3a thread class right-hand 1.569" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.400" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 0.400" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unjf thread series