3a thread class right-hand 0.562" thread length double hexagon w/hole head style 0.050" hole diameter 1.115" grip length 24 thread quantity per inch navy special project cadmium surface treated unjf thread series
2a thread class right-hand 0.298" thread length watertight head style 32 thread quantity per inch furnished with o-ring to AMS3302 cadmium surface treated unc thread series
Used on c-135 support equipment;aircraft, stratolifter c-135. 3a thread class right-hand 0.348" thread length pan no. 2 head style 32 thread quantity per inch passivate screw surface treated unf thread series