2a thread class right-hand 0.312" thread length flat countersunk head style 56 thread quantity per inch cadmium screw surface treated unc thread series
Used on mrap rg-33. 2a thread class right-hand 1.750" thread length hexagon head style 16 thread quantity per inch zinc surface treated unf thread series
2a thread class right-hand 0.750" thread length oval countersunk head style 20 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.688" thread length flat countersunk head style 40 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.375" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series