3a thread class right-hand 1.000" thread length hexagon head style 10 thread quantity per inch shank undercut at head end 0.125 in. w 0.734 in. dia unc thread series
2a thread class right-hand 0.790" thread length flat countersunk head style 24 thread quantity per inch phosphate screw surface treated unf thread series
2a thread class right-hand 0.276" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unf thread series
3a thread class right-hand 0.370" thread length flat chamfer head style 0.047" hole diameter 20 thread quantity per inch cadmium surface treated unc thread series
3a thread class right-hand 0.745" thread length flat chamfer head style 0.044" hole diameter 20 thread quantity per inch cadmium surface treated unc thread series