Used on f-111 all. 3a thread class right-hand 1.439" thread length double hexagon extended washer head style 6.000" grip length 16 thread quantity per inch cadmium or nickel surface treated unjf thread series
3a thread class right-hand 1.063" thread length bevel-conical head style 0.070" hole diameter 16 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.527" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unjc thread series