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
2a thread class right-hand 0.375" thread length flat chamfer head style 28 thread quantity per inch passivate screw surface treated knurled head unf thread series
3a thread class right-hand 0.350" thread length flat countersunk head style 0.678" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.140" thread length fillister head style 0.046" hole diameter 32 thread quantity per inch passivate surface treated unc thread series
3a thread class right-hand 0.313" thread length dished hexagon head style 4.865" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.608" thread length hexagon head style 1.296" grip length 14 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 1.000" thread length hexagon head style 0.062" hole diameter 24 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.313" thread length dished hexagon head style 1.865" grip length 32 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.469" thread length hexagon head style 0.375" grip length 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.562" thread length hexagon head style 1.250" grip length 16 thread quantity per inch passivate surface treated unf thread series