You seem to have found it Ian, I was looking for a 8mm x .75 tap the other day but could find all sizes fron 6mm to12mm except 8mm at my local supply (second hand shop), so I’ll need to go into Christchurch (NZ) the nearest large town 40 odd Km away, but I was surprised to find an almost complete set of .75 taps. I need it for a preesure gauge that I want to fit on my latest hot air engine. I found it had the same thread as the jets for my primus torch. Ian S C