It isn't, but 1/8 bsp tap will go through easy then you can use push fit pneumatic fittings.
It fact, on an undamaged thread a 1/8 bsp fitting will screw in without tapping it out. Gearbox, timing case etc are bsp though.
It isn't, but 1/8 bsp tap will go through easy then you can use push fit pneumatic fittings.
It fact, on an undamaged thread a 1/8 bsp fitting will screw in without tapping it out. Gearbox, timing case etc are bsp though.