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What is the thread size of the screw for the positive/negative battery terminal clamp?

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Does anyone know what the bolt/nut spec is for the battery terminals on the 12v aux battery?

I have literally been trying to figure this out for 3 weeks since I lost mine. The positive terminal clamp is currently zip tied into place I have:
- Searched Google and gone through more than 10 pages of results
- Asked a Tesla service rep if I could buy the part and the nut size (they told me no, it comes with the whole harness, and the size is “10mm”
- Checked the service manual
- Searched the forum
- Tried buying multiple 10mm nuts as well as a standard 5-16 threaded nut as suggested by a few friends

Ideally I’d like to have a proper nut again instead of a jank solution. If anybody knows the spec it would be super helpful!
 
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