3a thread class right-hand 0.424" thread length flat chamfer head style 40 thread quantity per inch chromate zinc screw surface treated unf thread series
2a thread class right-hand 0.188" thread length round head style 56 thread quantity per inch navy special project passivate screw surface treated unc thread series
2a thread class right-hand 1.750" thread length fillister head style 28 thread quantity per inch cadmium or zinc screw surface treated unf thread series
2a thread class right-hand 0.312" thread length fillister head style 32 thread quantity per inch cadmium or zinc screw surface treated unf thread series
2a thread class right-hand 0.625" thread length fillister head style 18 thread quantity per inch cadmium or zinc screw surface treated unc thread series
2a thread class right-hand 0.479" thread length fillister head style 24 thread quantity per inch cadmium or zinc screw surface treated unc thread series
2a thread class right-hand 0.626" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.750" thread length oval countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.312" thread length oval countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
2a thread class right-hand 0.500" thread length oval countersunk head style 32 thread quantity per inch chromium screw surface treated unc thread series