3a thread class right-hand 0.276" thread length pan head style 1.928" grip length 32 thread quantity per inch passivate surface treated unjc thread series
3a thread class right-hand 0.425" thread length dished hexagon head style 1.802" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.380" thread length flat chamfer head style 32 thread quantity per inch undercut between unthreaded area counterbore threaded unc thread series
Used on mrap buffalo mk2a2. 3a thread class right-hand 0.438" thread length pan head style 32 thread quantity per inch zinc screw surface treated unf thread series
3a thread class right-hand 0.616" thread length flat countersunk head style 1.302" grip length 24 thread quantity per inch passivate surface treated unjf thread series