3a thread class right-hand 0.580" thread length dee chamfer head style 0.538" grip length 28 thread quantity per inch head out of round unjf thread series
Used on sentry f22 aircraft. 2a thread class right-hand 0.630" thread length hexagon head style 32 thread quantity per inch cadmium or chromate surface treated unf thread series
2a thread class right-hand 1.500" thread length hexagon head style 32 thread quantity per inch cadmium screw surface treated item is not heat treated, drilled or slotted; screw is trimmed unf thread series
2a thread class right-hand 0.496" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.339" thread length flat countersunk head style 32 thread quantity per inch passivate fastener surface treated unjc thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.157" grip length 4680 double pounds per square inch shear strength cadmium body surface treated