2a thread class right-hand 0.500" thread length truss head style 32 thread quantity per inch large-diameter truss head phillips machine screw oxide screw surface treated unf thread series
Used on intake manifold & plenum 454/502 mag mpi engine gen vi. right-hand hexagon head style 18 thread quantity per inch screw (5/16-18 x 4 in.) unc thread series
Used on thermostat housing & hoses 454/502 mag mpi engine gen vi. right-hand hexagon extended washer head style 18 thread quantity per inch screw unc thread series
Used on B-52. 3a thread class right-hand 0.425" thread length dished hexagon head style 3.240" grip length 28 thread quantity per inch bolt tension hex head passivate surface treated unjf thread series
Used on closed cooling system 454/502 mag mpi engine gen vi. right-hand hexagon head style 16 thread quantity per inch screw (3/8-16 x 1 in) unc thread series
Used on c5m flap brak. 2a thread class right-hand 0.980" thread length hexagon head style 32 thread quantity per inch bolt shoulder cadmium surface treated unf thread series