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Thread cutting nuts???

Discussion in 'Body / Trim' started by Jaked1985, Aug 9, 2017.

  1. Jaked1985

    Jaked1985 Not-quite-so-new-guy

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    Can someone give me some input on what size the nuts are that hold the rear bumper cover and quarter panel extensions on an 84 monte?
    I picked up a package of what I thought were correct, 6.3x1.00 11mm socket head and 18mm washer size.
    They look correct, but, they won't tighten down. They thread on fine, just won't tighten up.

    The only other non standard size I can find are 5mm×1.0. Which I thought might be too small..
     
  2. Injectedcutty

    Injectedcutty Royal Smart Person

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    They should be regular M6-1.0 thread.
     
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  3. pagrunt

    pagrunt G-Body Guru

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    GM p/n 11505159 nut, stamp flange, M6x1
     
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  4. oldsmobile joe

    oldsmobile joe Master Mechanic

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    and i believe the head on them is 10 or 11 mm
    joe
     
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