Used on aircraft model av-8. 3a thread class right-hand 0.187" thread length round head style 40 thread quantity per inch oxide screw surface treated unc thread series
2a thread class right-hand 0.588" thread length oval countersunk head style 32 thread quantity per inch chromate zinc screw surface treated unc thread series
3a thread class right-hand 0.148" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unjc thread series
2a thread class right-hand 0.034" thread length flat countersunk head style 36 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.702" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
3a thread class right-hand 1.069" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjc thread series
3a thread class right-hand 0.417" thread length flat countersunk head style 28 thread quantity per inch passivate screw surface treated unjf thread series