Author Topic: Trouble with my nuts  (Read 3211 times)

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Trouble with my nuts
« on: June 23, 2016, 09:36:32 pm »
Back to my Bond MkD resto which has stalled for a year.

I'm stuck for a speedo nut and a nut for my wiper motor. They seem to be 34 tpi which is a very odd size.

Can anybody suggest where I can get a 3/16 x 34tpi and a 3/8 x 34tpi nut?

Thanks

Bob Purton

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Re: Trouble with my nuts
« Reply #1 on: June 23, 2016, 11:52:19 pm »
could it not be .75mm?

Basket case

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Re: Trouble with my nuts
« Reply #2 on: June 24, 2016, 09:13:15 am »
Possibly, for the wiper motor I'm going to try a M8 x .75 nut from a guitar jack socket, but I'm stumped for the smaller one (speedo).
Would they have used metric in the 50's?

DaveMiller

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Re: Trouble with my nuts
« Reply #3 on: June 24, 2016, 11:44:28 am »
Would they have used metric in the 50's?

Quite a few threads of the time, especially on instrumentation, were BA (British Association) threads.  Strangely enough (and "not a lot of people know that"), BA threads are metric!

The standard BA series, known as B1, B2, etc, does use a 0.75 mm pitch - but not in the diameters you quote, unfortunately!

Big Al

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Re: Trouble with my nuts
« Reply #4 on: June 24, 2016, 12:03:16 pm »
BA, the Brexit of threaded technology.

Metric fine? BA is used by instrument makers. Not so sure about a wiper motor, but they tend to use a fine pitch. thread on the spindle. If you were near you could have had a delve in my bits boxes.
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