2a thread class right-hand 0.438" thread length thumb no. 3 head style 0.070" hole diameter 32 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.389" thread length hexagon head style 2.490" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.438" thread length flat chamfer head style 32 thread quantity per inch navy special project drilled hole perpendicular from socked head to shank thread 0.063 in dia unf thread series
3a thread class right-hand 1.544" thread length double hexagon w/hole head style 0.815" grip length 28 thread quantity per inch navy special project unjf thread series