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Ground stud nut size?

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Old Dec 11, 2025 | 03:21 PM
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Default Ground stud nut size?

Anybody know off hand the size nut that is used on the grounding studs? Specifically the grounding stud just below the alternator and the AC line. I'm guessing/assuming it's Metric? I'm going to install a front camera and that appears to be the best possible grounding spot. I'd like to just put a nut on top of the nut that's there, there's plenty of threads to tighten down a wire lug to the existing stud. Or any other/better ideas for running a ground wire?
Thanks in advance for your help and suggestions.
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Old Dec 12, 2025 | 08:54 AM
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Originally Posted by Undatakr
Anybody know off hand the size nut that is used on the grounding studs? Specifically the grounding stud just below the alternator and the AC line. I'm guessing/assuming it's Metric? I'm going to install a front camera and that appears to be the best possible grounding spot. I'd like to just put a nut on top of the nut that's there, there's plenty of threads to tighten down a wire lug to the existing stud. Or any other/better ideas for running a ground wire?
Thanks in advance for your help and suggestions.
The size is 8mm, but I am not sure of the thread pitch, I tried to run my 8mm-1.25 tap through the nut and it would not start, so I suspect it is a 1.0 thread pitch, nuts are cheap get one of each.
When I did that same trick on my 2019 1LT, I just backed the nut off enough so I could slide a split terminal lug under it, that way I did not have to remove the nut or install a second nut on top. If you have ring terminal, just nip a little portion out of it to make it look like a "C", so you can slide it past the stud under the nut.
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