2a thread class right-hand 0.625" thread length hexagon head style 16 thread quantity per inch serrated flange on head cadmium surface treated unc thread series
2a thread class right-hand 2.500" thread length hexagon head style 8 thread quantity per inch navy special project grade 8 with plain surface treatment unc thread series
2a thread class right-hand 2.500" thread length hexagon head style 8 thread quantity per inch navy special project grade 8 with plain surface treatment unc thread series