Used on valve,globe. 3a thread class right-hand 1.062" thread length hexagon extended washer head style 13 thread quantity per inch part of logistic escape trunk fairing assembly unc thread series
2a thread class right-hand 0.750" thread length hexagon head style 20 thread quantity per inch navy special project cadmium surface treated unc thread series
3a thread class right-hand 0.842" thread length hexagon head style 6.062" grip length 20 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.842" thread length hexagon head style 6.062" grip length 20 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.746" thread length flat countersunk head style 0.428" grip length 32 thread quantity per inch passivate surface treated unjf thread series