Used on e-3 block 404. 3a thread class right-hand 0.400" thread length tee no. 1 head style 28 thread quantity per inch screw, hex head with cross recess unjf thread series
Used on e-3 block 404. 3a thread class right-hand 3.687" thread length hexagon head style 32 thread quantity per inch screw, cap, hexagon head optional drive feature cross shape aluminum surface treated unjf thread series
