2a thread class right-hand 0.292" thread length fillister head style 0.043" hole diameter 24 thread quantity per inch zinc screw surface treated unc thread series
2a thread class right-hand 0.027" thread length flat countersunk head style 80 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.465" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjc 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