> The thumb screws used. To hold the bracket to the gauge so it stays in the
> dash. Is the thread 4.5mm course? I just received new nuts and they don't
> fit. Since they are aluminium I figured I would simply re-tap them.
As best I can make out, the threads on the oil gage are 3 BA (British
Associated).
My thread chart gives 3 BA as having a major diameter of .1614", and a
thread pitch of 34.75 tpi.
But, M4.5 x .75 (which translates to .1772" and 33.866 tpi) might be close
enough to work.
Randall
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