Sounds like it is British Standard Cycle Thread. Check this link for a
chart: http://www.britishtool.com/bscchart.htm
BTW, British Cycle Thread is also used on the windshield pivot studs -
at least on the TC. Not sure about the later cars.
Regards,
Charles Hill
J.E.A. Rich wrote:
> Terry,
>
> The 16 tpi is not weird if you are a British auto engineer. On most
> of the older British cars there are several larger nuts with threads
> of 16 tpi. The thing that is weird is that the 16 threads were used
> on all sizes between 3/4" and 1 1/2" diameter for special items like
> steering shafts.
>
> Cheers, "Bob".
>
> P.S. I know its a bit early for Santa, but if you're making a list
> put "Thread gauge" on it.
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