2a thread class right-hand 2.150" thread length hexagon head style 20 thread quantity per inch navy special project passivate surface treated unc thread series
2a thread class right-hand 0.200" thread length double hexagon extended washer head style 32 thread quantity per inch thread relief 0.100 dia. 0.045 - 0.050 lg unc thread series
Used on mrap cougar ambulance; mrap buffalo mk2a2. 2a thread class right-hand 0.750" thread length hexagon head style 20 thread quantity per inch unc thread series
3a thread class right-hand 0.376" thread length hexagon head style 32 thread quantity per inch parts made from 303 passivate surface treated unf thread series