3a thread class right-hand 0.525" thread length dished hexagon head style 1.750" grip length 28 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand 1.750" thread length hexagon head style 8 thread quantity per inch navy special project electrofilm 99-a or lubri-bond .00025-.0005 thk all over after final machining unc thread series
3a thread class right-hand 1.096" thread length dished hexagon head style 0.030" grip length 28 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.338" thread length hexagon head style 0.312" grip length 32 thread quantity per inch aluminum surface treated unjf thread series