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Thread: Long Hex Nut for Pierburg Mechanical Pump - Need Dimensions Please

  1. #1
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    Long Hex Nut for Pierburg Mechanical Pump - Need Dimensions Please

    I need to make a couple of the long hex nuts for the lower stud mount on a Pierburg mechanical pump. Could someone measure the length and width for me? I'm assuming its 13mm across the flats like the upper nut but want to be sure and know the length. Thank you in advance!

  2. #2
    Senior Member VA_alfa's Avatar
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    I need one too. Following.

    In this thread it is suggested that the nut is about 5cm long.
    http://www.early911sregistry.org/for.../t-124922.html
    Last edited by VA_alfa; 02-22-2018 at 03:24 AM.
    Alex in Virginia


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  3. #3
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    I don't know the length but I know it is 12mm across the flats as the top nut should be .

  4. #4
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    The thread from above is interesting. I've only seen two presumed originals and they were both closed at the end, thus not a coupler as referenced in that thread. Has anyone else noticed that on a known original?

  5. #5
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    Yes , the originals I have seen were closed on the end.

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