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
3a thread class right-hand 0.475" thread length double hexagon w/ hole head style 24 thread quantity per inch zinc screw surface treated unf thread series
Used on e3/ awacs. 2a thread class right-hand 0.340" thread length pan no. 2 head style 32 thread quantity per inch hold-down retainer unf thread series
3a thread class right-hand 0.312" thread length double chamfer head style 28 thread quantity per inch machine, screw material is beryllium copper, heat treat to cond. ht per PS15935, see dwg. for additional specifications unf thread series
Used on RQ-4A. 3a thread class right-hand 0.139" thread length flat countersunk head style 32 thread quantity per inch internal drive offset cruciform recess per MS14191 unjf thread series
