My current TE engine project calls for 3/8″ copper pipe fittings threaded 7/16 x 26 tpi. None of my usual (or any other searched) sources list either the tap or the pipe fittings for this size.
Any ideas gratefully received.
Incidentally I have found that nothing concentrates the mind better than machining the exhaust and inlet ports in a dual cylinder casting that already has taken 8 hours of careful machining.
Tony