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Date:         Mon, 7 May 2012 14:53:32 -0400
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: 2.1 Exhaust. P. 26.9 Bentley: "5 Diaphragm Springs" ?
Comments: To: neil n <musomuso@GMAIL.COM>
In-Reply-To:  <CAB2Rwfg=w0GbbeA7uE63nH-dPEZy4zRSGxJiQTuvr-5h1vDiKg@mail.g
              mail.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 01:15 PM 5/7/2012, neil n wrote: >Image: >https://lh6.googleusercontent.com/-0tqzGn0WwFE/T6gB740u5eI/AAAAAAAAFuM/0vRYhIVlLd0/s576/cadmium%2520plated%2520%253F.jpg

Always hard to tell from photos on monitors, but that looks like a copper-plated nut to me. Cadmium (nasty toxic stuff) tends to a light-yellow color. Here's Febi's take on the subject: http://www.germansupply.com/home/customer/product.php?productid=16355

I bought a box of 100 for not a whole lot more than that from my local truly friendly imported auto specialist a few years back. They weren't as fancy as the Febi ones, though. Nice heavy copper, thicker than I would have called "plating."

Solid brass has been recently put forward here as the aviation answer.

The concave washer p/n is 025 251 200, dunno if still available from VW. Out in the Real World it's called a Belleville Washer (see http://en.wikipedia.org/wiki/Belleville_washer )* and you can get them from lots of places including Belleville themselves (in England). Might have to do some calculating to figure out what spec you need that would flatten out with normal torque on an M8x1.25 nut though, or whether VW wanted one that would actually not completely flatten and would give a little flexibility in the joint. Getting hold of an original would help a lot.

*These are on my list as one of the cleverest inventions in the universe...

Yours, David


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