Used on c-5 aircraft. 3a thread class right-hand countersunk w/reverse chamfer head style 28 thread quantity per inch hi-lok hi-tigu pin unjf thread series
3a thread class right-hand 0.363" thread length flat countersunk head style 0.552" grip length 32 thread quantity per inch screw shear, close tolerance aluminum surface treated unjf thread series
Used on e-3 aircraft. 3a thread class right-hand 0.553" thread length dished hexagon head style 0.865" grip length 24 thread quantity per inch cadmium surface treated unjf thread series
Used on c-17a globemaster iii. right-hand crown countersunk less than 135 degrees head style 0.495" grip length 24 thread quantity per inch aluminum surface treated unjf thread series
Used on F-15SA. 3a thread class right-hand 0.638" thread length flat countersunk undercut head style 32 thread quantity per inch 316 s/s flat head socket screw unc thread series
3a thread class right-hand 0.768" thread length double hexagon extended washer head style 20 thread quantity per inch cadmium surface treated unjf thread series
