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Re: [Healeys] Fuel gauge brass nuts BA?

To: List Healey <healeys@autox.team.net>
Subject: Re: [Healeys] Fuel gauge brass nuts BA?
From: Bert Van Brande <bertvanbrande@yahoo.com>
Date: Sat, 13 Nov 2010 17:03:27 -0800 (PST)
Consensus is BA for Smiths instruments.  4BA for the fuel gauge posts.
Thanks
to Jaap and Alan for offering sending 4BA nuts.  Jaap is sending a couple nuts
across the pond!

Bert


--- On Sat, 11/13/10, Bert Van Brande
<bertvanbrande@yahoo.com> wrote:

> From: Bert Van Brande
<bertvanbrande@yahoo.com>
> Subject: [Healeys] Fuel gauge brass nuts BA?
> To:
"List Healey" <healeys@autox.team.net>
> Date: Saturday, November 13, 2010,
5:29 AM
> Looking for the specification of the
> brass nuts on the signal
posts of the fuel gauge (where the
> electric wire attaches) for an original
100-4 gauge.  I
> believe they're BA.  I measure an OD of 0.137" and
> since I
don't have BA/BSF/Whithworth gauges I estimated
> thread pitch around 38
TPI   
> 
> According to Wikipedia this brings it close to a
> 4BA   0.1417 in
/ 3.6 mm   
> 38.46 TPI  So I measure 4 thou difference on the
> diameter. 
Maybe wear or my calipers.
> 
> Can anybody confirm or correct my thinking? 
> 
> UK model engineering supplies still carry these nuts, not
> sure if there
are sources on this side of the pond but
> postage on a couple nuts will
likely not be too high.
> 
> Bert
>
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