3a thread class right-hand 0.338" thread length flat countersunk head style 0.678" grip length 32 thread quantity per inch aluminum surface treated unjf thread series
3a thread class right-hand 0.611" thread length pan no. 2 head style 32 thread quantity per inch cadmium screw surface treated internaldrive ribbed unjc thread series
3a thread class right-hand 0.444" thread length flat countersunk head style 0.678" grip length 24 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.429" thread length dished hexagon head style 0.678" grip length 24 thread quantity per inch passivate surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.063" grip length 1845 single pounds per square inch shear strength