3a thread class right-hand 0.563" thread length flat chamfer head style 0.047" hole diameter 32 thread quantity per inch passivate surface treated unf thread series
2a thread class right-hand 1.235" thread length round extended washer head style 40 thread quantity per inch cadmium screw surface treated unc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.171" grip length anodize sleeve or chromate sleeve surface treated
1a thread class right-hand 0.478" thread length flat chamfer head style 0.235" grip length 28 thread quantity per inch nickel surface treated unf thread series
3a thread class right-hand 0.469" thread length hexagon head style 1.062" grip length 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.318" thread length hexagon head style 3.115" grip length 32 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.456" thread length flat countersunk head style 0.625" grip length 28 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.138" thread length fillister head style 0.037" hole diameter 48 thread quantity per inch oxide film screw surface treated unf thread series