2a thread class right-hand 0.163" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
Used on mrap - cougar tow; mrap - cougar sabr/tow. 2a thread class right-hand 1.0000" thread length hexagon head style 16 thread quantity per inch head marked with six radical lines to indicate grade 8 chromate zinc surface treated unc thread series
3a thread class right-hand 0.252" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
3a thread class right-hand 0.338" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjf thread series
2a thread class right-hand 0.934" thread length flat countersunk head style 56 thread quantity per inch cadmium screw surface treated unc thread series