3a thread class right-hand 1.000" grip length 28 thread quantity per inch 9300 double pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.476" thread length flat countersunk head style 0.365" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.415" thread length hexagon head style 24 thread quantity per inch passivate surface treated counterbore unthreaded unf thread series
3a thread class right-hand 0.232" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unjc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.626" grip length anodize sleeve or chromate sleeve surface treated
3a thread class right-hand 0.250" thread length flat countersunk head style 32 thread quantity per inch cadmium fastener surface treated unjf thread series