3a thread class right-hand 0.843" thread length flat countersunk head style 20 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 1.250" thread length oval countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.230" thread length oval countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series