3a thread class right-hand 0.278" thread length crowned hexagon head style 0.812" grip length 28 thread quantity per inch navy special project retaining balls in shank cadmium surface treated unjf thread series
3a thread class right-hand 0.277" thread length crowned hexagon head style 0.688" grip length 28 thread quantity per inch navy special project retaining balls in shank cadmium surface treated unjf thread series
3a thread class right-hand 0.542" thread length flat chamfer head style 24 thread quantity per inch finish color black; verical knurl unf thread series