Used on f-22 raptor. right-hand 1.500" thread length flat chamfer head style H20 thread quantity per inch wheel stud grade 8 steel; shank is knurled zinc surface treated unf thread series
3a thread class right-hand 0.690" thread length double hexagon extended washer head style 24 thread quantity per inch 4130 steel cadmium surface treated un thread series
Used on mv-22 aircraft (v-22 lrip 1 e-nsn isil). 3a thread class right-hand 0.455" thread length double hexagon w/hole head style 28 thread quantity per inch bolt, 12 point head, 200 ksi min tensile, A286 cres; navy: bolt, shear, aircraft these bolts are intended for tension applications where high strength, fatigue resistance, toughness unjf thread series
Used on interim armored vehicle (iav),contractor logistics support (cls). 2a thread class right-hand 1.600" thread length flat chamfer head style 18 thread quantity per inch unf thread series