3a thread class right-hand 1.209" thread length double hexagon head style 2.312" grip length 12 thread quantity per inch navy special project unjf thread series
3a thread class right-hand 1.440" thread length double hexagon head style 2.938" grip length 12 thread quantity per inch navy special project unjf thread series
3a thread class right-hand 0.444" thread length hexagon head style 1.115" grip length 28 thread quantity per inch passivate fastener surface treated unf thread series
3a thread class right-hand 0.450" thread length pan head style 0.170" grip length 32 thread quantity per inch cadmium surface treated unjc thread series