3a thread class right-hand 0.563" thread length crowned hexagon head style 4.156" grip length 28 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.766" thread length flat countersunk head style 24 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 0.057" hole diameter head drilled 0.057 in. min 0.078 in. max dia, 0.080 in. min 0.100 in. max deep
2a thread class right-hand 0.625" thread length round head style 32 thread quantity per inch thd to secure washer on fastener but not prevent it fromturning cadmium surface treated unc thread series
2a thread class right-hand 1.750" thread length hexagon head style 16 thread quantity per inch navy special project cadmium or zinc surface treated unf thread series
3a thread class right-hand 0.417" thread length fillister head style 0.046" hole diameter 24 thread quantity per inch cadmium screw surface treated unc thread series
3a thread class left-hand 0.328" thread length flat countersunk head style 28 thread quantity per inch cadmium threads surface treated unf thread series
3a thread class right-hand 0.328" thread length flat countersunk head style 28 thread quantity per inch cadmium threads surface treated unf thread series
3a thread class right-hand 1.125" thread length double hexagon extended washer head style 24 thread quantity per inch cadmium surface treated unf thread series
