Bob -
All that stuff on smith's guages is BA threading. Thinking about the studs
on the back of the gauges, my guess is the thumbscrews are probably 3 or 4
BA size. the thumbscrews can be bought from a multitude of suppliers for
small money:
http://www.sussexclassiccar.co.uk/shop_factory_hazel/index1.html
Alan
'52 A90
'53 BN1
'59 Jag Mk IX
'64 BJ8
On Thu, Apr 1, 2010 at 9:14 AM, Bob Spidell <bspidell@comcast.net> wrote:
> Anyone know the size and thread of the studs on the back of Smiths speedos,
> tachs, etc. (the ones that hold the clamps to the backside of the panel)?
> We have--ahem--'aftermarket' screws intalled by a PO on our BN2's speedo,
> and I'd like to get back closer to original; I have new thumbscrews but they
> don't fit any screws in my inventory (looks like size 8 but the thread is
> not 32tpi--24tpi maybe?).
>
> TIA,
> Bob
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