[Healeys] BA taps

[john harper]

Most Lucas items also used odd thread sizes such as 3 and 5 BA

On Thu, 27 Oct 2022 at 04:56, Alan Seigrist <healey.nut at gmail.com> wrote:

> Yeah, my A90's trafficator is full of weirdo BA screw sizes.  I ended up
> buying a full tap kit a few years ago to deal with it.
>
> On Thu, Oct 27, 2022 at 6:16 AM mike brooks via Healeys <
> healeys at autox.team.net> wrote:
>
>> BA taps, nuts, bolts, set screws etc are still readily available in the
>> UK, mainly because they are much used by model makers. RGD Tools in
>> Yorkshire have all the taps. There are several vendors stocking nuts and
>> bolts. As a matter of interest I read somewhere that instrument makers like
>> Smiths deliberately used the uncommon odd numbered BA threads like 3BA,
>> when 2BA and 4BA were the common sizes. The set screws holding the fuel
>> gauge sender unit is another example of 3BA.
>>
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