Used on w/s: aircraft, eagle f-15. 3a thread class right-hand 0.443" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.428" thread length flat chamfer head style 0.037" hole diameter 32 thread quantity per inch passivate surface treated unc thread series
3a thread class right-hand 0.938" thread length flat chamfer head style 18 thread quantity per inch with groove in side of head 0.188 in. w 0.094 in. deep, furnished with hex nut unf thread series
2a nut thread thread class right-hand nut thread 1.188" nut thread thread length 16 nut thread thread quantity per inch 0.562 dia drill point countersunk on stud end 0.094 in. lg by 0.625 in. dia thread relief on nut end unf nut thread thread series
