23-08-2019, 08:13 AM
Thanks! I think 3.5mm is pretty close! Just to add confusion the BA (British Association) threads widely used on electrics have many Metric similarities! O BA to 6mm are very similar... Zenith Carburettors use many metric threads, even when UK made as they had French ancestors and Morris used many metric threads in his engines as may were Hotchkiss based! A minefield.
David
David