3a thread class right-hand 1.317" grip length 20 thread quantity per inch 125000 single pounds per square inch shear strength cadmium surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 49000 single pounds per square inch shear strength cadmium surface treated
3a thread class right-hand 0.447" thread length double hexagon head style 1.673" grip length 24 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.447" thread length double hexagon head style 2.178" grip length 24 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.358" thread length double hexagon head style 1.052" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.484" thread length double hexagon head style 1.552" grip length 20 thread quantity per inch passivate surface treated unjf thread series
Used on aircraft, f-16. 3a thread class right-hand 0.528" thread length spline drive shear head head style 1.615" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.260" thread length flat countersunk head style 0.375" grip length 32 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.310" thread length hexagon head style 32 thread quantity per inch screw, captive passivate surface treated unc thread series