3a thread class right-hand 0.880" thread length flat chamfer head style 32 thread quantity per inch navy special project cadmium surface treated unc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.251" grip length anodize sleeve or chromate sleeve surface treated
3a thread class right-hand 0.667" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.406" thread length flat countersunk head style 0.623" grip length 32 thread quantity per inch aluminum surface treated unjf thread series
3a thread class right-hand 0.094" thread length flat countersunk undercut head style 0.490" grip length 24 thread quantity per inch dry film lubricnt; o ring unjf thread series
3a thread class right-hand 0.725" thread length double hexagon extended washer head style 1.313" grip length 18 thread quantity per inch unjf thread series