Used on v-22 aircraft. 3a thread class right-hand 0.617" thread length flat countersunk head style 24 thread quantity per inch screw, 100 degree flush head, full thread, 6 lobe recess passivate screw surface treated unjf thread series
Used on c-17a aircraft. 3a thread class right-hand flush countersunk head style 0.125" grip length 32 thread quantity per inch pin-rivet, threaded-100 deg fl crown shear hd aluminum surface treated unjc thread series