3a thread class right-hand 0.669" thread length dished hexagon head style 20 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 1.433" thread length dished hexagon head style 12 thread quantity per inch navy special project cadmium surface treated unjf thread series
3a thread class right-hand 0.490" thread length double hexagon head style 24 thread quantity per inch navy special project passivate surface treated unjf thread series