[Healeys] Thumbscrew threads

[Alan Seigrist]

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 at 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