[Healeys] Fuel gauge brass nuts BA?

[Bob Haskell]

Bert,

Yes, they're 4BA.

Bob Haskell
3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php

On 11/12/2010 11:29 PM, Bert Van Brande wrote:
> 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
> _______________________________________________