3a thread class right-hand 0.438" thread length hexagon head style 0.865" grip length 24 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.410" thread length flat countersunk undercut head style 28 thread quantity per inch furnished with one o ring unjf thread series
Used on mrap rg-33. 3a thread class right-hand 1.250" thread length flat countersunk head style 16 thread quantity per inch passivate surface treated unc thread series
2a thread class right-hand 0.375" thread length hexagon head style 24 thread quantity per inch navy special project passivate surface treated unc thread series