What size and thread pitch is my 10" rear drum brake bleeder screw?

[Eddo Rogue]

I want to try bleeding out the last bit of air using speed bleeders (replaced RABS valve and rear wheel cylinders). I have rear brakes but pedal still spongy...I already have a few Russell speed bleeders for other vehicles, but they didn't fit.

M8x1.0 was too small, and M10x1.0 was too big... the 33mm length seemed right....

is it a 3/8" fractional brake fitting? Rear is an 8.8" w/ the 10" drums.

I already hit it w/ a mity vac but doesn't seem to get all the air out, just sucks fluid. Manual Bleeding will take forever....keeps shooting air spritz of fluid.

 

[franklin2]

Very difficult to say. The wheel cylinders are made in China, and they seem to put all kinds of different sized bleeder screws in place, even on the same application.