2a thread class right-hand 2.000" thread length flat chamfer head style 0.250" hole diameter 0.560" grip length 16 thread quantity per inch unc thread series
2a thread class right-hand 0.875" thread length flat countersunk head style 16 thread quantity per inch lubricant threads surface treated unc thread series
Used on mh-53j,mh-60g acft. 3a thread class right-hand 0.325" thread length hexagon head style 20 thread quantity per inch next assy 8837227:part of adadpter assy .50 cal gun, d-13:used on machine gun cal .50 gau-18a unf thread series
2a thread class right-hand 1.000" thread length square head style 1.500" grip length 16 thread quantity per inch furnished with square nut unc thread series
3a thread class right-hand 1.375" thread length hexagon head style 5.735" grip length 12 thread quantity per inch passivate surface treated unf thread series
2a thread class right-hand 0.437" thread length hexagon head style 1.490" grip length 32 thread quantity per inch passivate surface treated unc thread series