2a thread class right-hand 0.091" thread length watertight head style 40 thread quantity per inch navy special project passivate screw surface treated furnished with 1 silicone rubber o ring per AMS3304, furnished with 1 flat washer per AMS3652 unc thread series
2a thread class right-hand 0.625" thread length round head style 40 thread quantity per inch navy special project passivate screw surface treated circular groove cut in thd 0.018 in. w by 0.074 in.dia located 0.350 in. from head bearing surface, keyway on thd 0.074 in. w from groove to end of shank unc thread series
2a thread class right-hand 0.281" thread length pan head style 80 thread quantity per inch navy special project passivate screw surface treated unf thread series
3a thread class right-hand 0.325" thread length flat countersunk head style 1.490" grip length 32 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 0.325" thread length flat countersunk head style 1.365" grip length 24 thread quantity per inch navy special project cadmium surface treated unjf thread series
Used on w/s: engine, t55-l-712 (ch-47/mh-47e); aircraft, starlifter c-141. 3a thread class right-hand 1.500" thread length fillister head style 0.046" hole diameter 32 thread quantity per inch passivate screw surface treated unf thread series
2a thread class right-hand 0.375" thread length pan head style 40 thread quantity per inch passivate screw surface treated head painted dark gray color no. 36231 fed std 595 unc thread series
2a thread class right-hand 0.438" thread length pan head style 32 thread quantity per inch passivate screw surface treated head painted dark gray color no. 36231 fed std 595 unc thread series
