2a thread class right-hand 1.010" thread length hexagon head style 0.094" hole diameter 20 thread quantity per inch navy special project unf thread series
2a thread class right-hand 0.820" thread length hexagon head style 20 thread quantity per inch navy special project cadmium surface treated unf thread series
2a thread class right-hand 0.499" thread length hexagon head style 28 thread quantity per inch navy special project cadmium surface treated unf thread series
2a thread class right-hand 0.637" thread length hexagon head style 24 thread quantity per inch navy special project cadmium surface treated unf thread series