Battery post issue?

2003 HUMMER H2
172,000 MILES • 4WD • AUTOMATIC
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BHAMDOC1
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Ever seen this or is it common on some US
Ade vehicles? Can tighten it fine without the cable. With the cable can barely get it to tighten before it goes loose again
Jul 9, 2026 at 4:31 PM
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STRAILER
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Hep, you need a longer bolt for the cable end, this will allow the bolt to get more of a "bit" on the threads for the battery terminal. This is a common 3/8 thread size, (course), you can get it at any hardware store, bring the old bolt with you, you may need some washers to get the spacing and the correct fitment. Thanks for the images. Let me know if you need anything else.
Jul 10, 2026 at 8:42 PM
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KRAKENAUTO
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Definitely need a longer bolt now for more bite. I have had good luck with Ace Hardware for stuff like this.
Jul 11, 2026 at 11:18 PM
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BHAMDOC1
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so these are not typical battery bolts that can be found easily? I would have thought this is an oem battery bolt
Jul 11, 2026 at 11:52 PM
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STRAILER
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You will need a washer/nut to step up the head of the bolt but yes you can use a regulator bolt. You want to space the head of the bolt outwards. Nice to see ya KRAKENAUTO!
Jul 12, 2026 at 5:02 PM
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BHAMDOC1
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I will remove it and take it with me, so far could not find anything similar at advance, this is not a 3/8 as I ordered a pair of 3/8 that were wayyyyy too small, this is a large bolt and the head has to be tightened using a 9/16 wrench. So far all I see are the small 3/8 ones
Jul 28, 2026 at 12:05 AM
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STRAILER
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3/8 course is the thread size not the head of the bolt, sorry.
Jul 28, 2026 at 12:44 AM
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BHAMDOC1
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ya I know. Both head size and thread size are way smaller. I will shoot you pictures of the battery, cables and bolts tomorrow
Jul 28, 2026 at 1:18 AM
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STRAILER
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Is that the same as what is above?
Jul 28, 2026 at 2:45 PM
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BHAMDOC1
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Turned out it was the right size, because I thought with the head size being 14mm it just looked bigger overall. Looking at this common 3/8 it looked way smaller but now comparing them and installing them it makes sense.
Jul 28, 2026 at 10:12 PM
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STRAILER
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Nice work!! Glad you got it fixed.
Jul 29, 2026 at 12:35 AM
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