3a thread class right-hand 0.250" thread length headless (setscrew) head style 40 thread quantity per inch cadmium or chromate surface treated unc thread series
3a thread class right-hand 0.469" thread length hexagon head style 0.046" hole diameter 1.062" grip length 28 thread quantity per inch oxide film surface treated unf thread series
3a thread class right-hand 0.316" thread length hexagon head style 1.250" grip length 20 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.366" thread length dished hexagon head style 1.115" grip length 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.323" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.063" grip length 70 single pounds per square inch shear strength anodize or oxide film surface treated
3a thread class right-hand 0.544" thread length hexagon head style 0.250" grip length 28 thread quantity per inch tensile strength at room temperature passivate surface treated unf thread series
3a thread class right-hand 0.276" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.140" thread length flat countersunk head style 56 thread quantity per inch navy special project passivate screw surface treated unc thread series
3a thread class right-hand 0.485" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.620" thread length flat countersunk head style 20 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.485" thread length flat countersunk undercut head style 28 thread quantity per inch cadmium screw surface treated unf thread series
