3a thread class right-hand 0.540" thread length round w/wrench flats chamfered head style 20 thread quantity per inch outer edge of one wrench flat chamfered 0.085 in. lg by 60 deg cadmium surface treated unf thread series
2a thread class right-hand 0.234" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
Used on tank, sheridan m-551. 2a thread class right-hand 1.000" thread length hexagon head style 16 thread quantity per inch with two pellets in thread cadmium surface treated unc thread series
2a thread class 0.544" thread length watertight head style 40 thread quantity per inch passivate screw surface treated furnish w/one silicone rubber o ring unc thread series
3a thread class right-hand 0.710" thread length dished hexagon head style 3.490" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 1.343" thread length hexagon head style 5.359" grip length 12 thread quantity per inch passivate surface treated unf thread series
2a thread class right-hand 0.250" thread length hexagon head style 40 thread quantity per inch axis of thd eccentric to axis of shoulder by 0.025 in. nickel surface treated unc thread series
