2a thread class right-hand 1.250" thread length hexagon head style 13 thread quantity per inch navy special project chromate or anodize surface treated unc thread series
2a thread class right-hand 0.750" thread length hexagon head style 0.0605" hole diameter 20 thread quantity per inch cadmium surface treated unc thread series
2a thread class right-hand 0.874" thread length hexagon head style 0.060" hole diameter 24 thread quantity per inch cadmium surface treated unf thread series