3a thread class right-hand 0.772" thread length flat chamfer head style 32 thread quantity per inch head vertically knurled anodize head surface treated unf thread series
2a nut thread a thread class right-hand nut thread a 1.000" nut thread b thread length 18.400" overall length 28 nut thread a thread quantity per inch one end with left hand thread unf nut thread a thread series
3a thread class right-hand 1.000" thread length flat chamfer head style 20 thread quantity per inch passivate fastener surface treated unc thread series
3a thread class right-hand 0.890" thread length 2.749" overall length 18 thread quantity per inch navy special project passivate surface treated round, closed w/shoulder unf thread series
3a thread class right-hand 1.052" thread length hexagon head style 0.940" grip length 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.363" thread length hexagon head style 0.672" grip length 24 thread quantity per inch cadmium surface treated unf thread series
2a thread class right-hand 0.406" thread length knurled no. 1 head style 28 thread quantity per inch cone point 90 degree angle passivate surface treated unf thread series
2a thread class right-hand 0.375" thread length knurled no. 1 head style 32 thread quantity per inch cone point 90 degree angle passivate surface treated unf thread series
Used on ta-4j aircraft. 3a thread class right-hand 1.017" thread length hexagon head style 2.365" grip length 18 thread quantity per inch passivate surface treated unf thread series
