How about Whitworth?
http://en.wikipedia.org/wiki/British_Standard_Whitworth
.bill in corvallis
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-----Original Message-----
From: spridgets-bounces@autox.team.net
[mailto:spridgets-bounces@autox.team.net] On Behalf Of Lester
Sent: Sunday, October 17, 2010 8:46 AM
To: Spridget List; bugeye@yahoogroups.com
Subject: Re: [Spridgets] Radiator temp gauge port size?
Ok,
I have tried a 5/8 -18 and it goes in a few threads but lock too soon, from
what I've read this means it is likely that this is a BSP thread. Online
shows no BSP at Lowes or Home Depot, or Pegasus.. any other ideas?
Lester
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On Oct 16, 2010, at 7:46 PM, frogeye wrote:
> Lester,
>
> I just measured the outside diameter of the threads on a gauge sender that
sits inside those threads
> I measure .625 and think it's a british pipe thread with dial verniers
> Close to 19 threads to the inch as well
> http://en.wikipedia.org/wiki/British_standard_pipe_thread
http://en.wikipedia.org/wiki/British_standard_pipe_thread
>
> my guess is a British standard pipe
> but those demensions don't seem to fit in that chart I linked to you
> I'll keep looking and watching for answers
>
> Alan
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