3a thread class right-hand 0.320" thread length hexagon head style 0.048" hole diameter 32 thread quantity per inch navy special project unf thread series
right-hand 1.150" thread length hexagon head style 20 thread quantity per inch head slotted in castle patten point to point oxide surface treated unc thread series
3a thread class right-hand 0.678" thread length double hexagon w/hole head style 32 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.631" thread length hexagon head style 0.922" grip length 24 thread quantity per inch passivate surface treated unf thread series
