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Old May 7, 2018 | 05:45 PM
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Default Socket Sizes on C5 BATTERY Help
I know this sounds elementary but I am in a bind. I do not have my tools with me and having someone bring them to me. Can you tell me what socket sizes I need to tell them to bring for my Optima side mount?

8mm?
13mm w extension? Positive cable...15mm???
11mm?
Thanks for the help!
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Old May 7, 2018 | 07:03 PM
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Believe it's a 10mm
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Old May 7, 2018 | 07:14 PM
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Def not a 10mm. That is what i had with me and didn’t fit any of the locations. Hoping to get all sizes for the 4 different bolts...
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Old May 7, 2018 | 08:27 PM
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Originally Posted by stilambo07
Def not a 10mm. That is what i had with me and didn’t fit any of the locations. Hoping to get all sizes for the 4 different bolts...

8mm
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Old May 7, 2018 | 08:56 PM
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Thank you! What about the large positive bolt and the two top posts?
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Old May 7, 2018 | 09:15 PM
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Originally Posted by stilambo07
Thank you! What about the large positive bolt and the two top posts?
Hard to say.

Mine does not have top posts and I have found over the years that top post clamp nuts vary.

From the pics they look like they could be 1/2"
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Old May 7, 2018 | 09:36 PM
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5/16ths on the negative side terminal. I also believe the top posts and the battery hold down are 1/2".
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Old May 7, 2018 | 10:33 PM
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Side terminals are 8mm.
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Old May 7, 2018 | 10:36 PM
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I hope you are kidding but....... go to AutoZone for help of this nature
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Old May 7, 2018 | 11:31 PM
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8mm = 5/16"
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Old May 8, 2018 | 01:05 AM
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Originally Posted by jrprich
8mm
This.
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Old May 8, 2018 | 05:37 AM
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You need an adjustable metric wrench
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Old May 8, 2018 | 06:03 AM
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Originally Posted by TOPCATHR
You need an adjustable metric wrench
Make sure it is not a left handed adjustable metric wrench. Unless you are left handed.
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Old May 8, 2018 | 05:37 PM
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its the size you'll find on a crescent wrench...
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