3a thread class right-hand 0.065" thread length flat countersunk head style 80 thread quantity per inch passivate screw surface treated unf thread series
2a thread class right-hand 0.109" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.314" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.401" thread length flat countersunk head style 28 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.376" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
2a thread class right-hand 0.246" thread length flat countersunk head style 56 thread quantity per inch navy special project passivate screw surface treated unc thread series