3a thread class right-hand 0.246" thread length flat chamfer head style 0.036" hole diameter 40 thread quantity per inch cadmium surface treated unc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.188" grip length zinc body or chromate body or phosphate body surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 2.094" grip length 12200 single pounds per square inch shear strength cadmium sleeve surface treated
3a thread class right-hand 0.490" thread length double hexagon head style 2.490" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.180" thread length hexagon head style 32 thread quantity per inch navy special project passivate surface treated unf thread series
3a thread class right-hand 0.486" thread length dished hexagon head style 3.115" grip length 18 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 1.000" thread length flat chamfer head style 20 thread quantity per inch finish color black cadmium fastener surface treated unrc thread series
2a thread class right-hand 0.170" thread length flat chamfer head style 40 thread quantity per inch navy special project passivate screw surface treated unc thread series