Jerry,
It's a British Standard Pipe (BSP) thread which is a Whitworth Form thread
(55 degree pitch angle of the threads versus the 60 degree angle for US
pipe threads) and not compatible with anything you can easily find here in
the US.
I've attached some basic information on BSP threads.
Cheers,
Curt
On Mon, Apr 22, 2013 at 7:43 AM, Jerry Costanzo <grumpyinloomis@ssctv.net>wrote:
> Group,
> I have been adapting some HD6 carbs (1960) and need to know the thread on
> the
> intake banjo to the carbs. It does not seem to be regular pipe thread.
> Any
> hints for me?
>
> Jerry
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[demime 1.01d removed an attachment of type application/msword which had a name
of BSP Thread Data.doc]
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