3a thread class right-hand 0.402" thread length dished hexagon head style 1.125" grip length 28 thread quantity per inch furnished with optional ring or ball type retaining element cadmium surface treated unjf thread series
3a thread class right-hand 0.376" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series
Used on spec item. 3a thread class right-hand 0.626" thread length hexagon head style 4.548" grip length 20 thread quantity per inch cadmium surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.376" grip length for use with single action hand held or automated inst tools, color code yellow on spindle anodize stem or chromate stem surface treated
2a thread class right-hand 0.438" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series