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Battery clamp bolt

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Old Jun 15, 2012 | 08:33 AM
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Default Battery clamp bolt

Guys, my car is missing the battery clamp with the bolt, does anybody know bolt dimension and thread? Thanks
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Old Jun 15, 2012 | 08:36 AM
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Originally Posted by Iron_dog
Guys, my car is missing the battery clamp with the bolt, does anybody know bolt dimension and thread? Thanks
Are you talking about the battery terminal bolt? Standard size, walk in to any auto parts store.
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Old Jun 15, 2012 | 08:48 AM
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Originally Posted by LeMans Pete
Are you talking about the battery terminal bolt? Standard size, walk in to any auto parts store.
No, the clamp that locks the battery to the chassis!
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Old Jun 15, 2012 | 08:54 AM
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You can purchase that clamp and bolt from some of the Corvette aftermarket suppliers. If you are using the original style of battery, I would recommend getting a replacement for that clamp, so that it will fit and hold the battery properly. I believe the bolt has a 5/16" diameter thread, but I'm unsure whether it is fine thread or coarse thread.
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Old Jun 15, 2012 | 09:13 AM
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Originally Posted by 7T1vette
You can purchase that clamp and bolt from some of the Corvette aftermarket suppliers. If you are using the original style of battery, I would recommend getting a replacement for that clamp, so that it will fit and hold the battery properly. I believe the bolt has a 5/16" diameter thread, but I'm unsure whether it is fine thread or coarse thread.
Yes I know but I would like to avoid to pay a lot of shipping costs for a bolt, I live in Europe... that's why I asked for size and thread type...
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Old Jun 15, 2012 | 10:59 AM
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Originally Posted by Iron_dog
Yes I know ..but I live in Europe.
Then put it in your profile so we don't have to guess.
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Old Jun 15, 2012 | 11:37 PM
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My recollection is that it is a 5/16"-18 bolt about 1.5" long. But, I'm not going to disassemble my battery/box to check it. Hope someone else can confirm or correct this info.
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Old Jun 16, 2012 | 04:12 AM
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Originally Posted by 7T1vette
My recollection is that it is a 5/16"-18 bolt about 1.5" long. But, I'm not going to disassemble my battery/box to check it. Hope someone else can confirm or correct this info.
Your close. My 78 was missing one but than I had another 78 to check the bolt configuration. I picked one up at a swap meet (and bracket) for a couple of bucks. I would agree with the length and it also has a pointed end. I'll see if I can locate it and check length and width, seems like the threads are fine.
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Old Jun 16, 2012 | 08:38 AM
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In order to get free shipping I needed to buy another $1. so I purchase the bolt since I also bought the clamp. If you go to Zip-corvette.com and punch in item #bt-43 you will see it. Unfortunately the new battery I have is wider than original so I needed to get a longer bolt to make it work. Here's a pic. 1/2 inch socket fits


Last edited by BKarol; Jun 16, 2012 at 08:59 AM.
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Old Jun 16, 2012 | 08:52 AM
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Mine was missing because the hole was stripped. I just picked up a bolt, nut, and a couple washers and secured the battery. It didn't cost much and I was looking for functionality over originality.
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Old Jun 18, 2012 | 01:25 PM
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From the GM parts catalog 74-82
PART-NO. 458985, SCREW ASM-HEX 5/16-18X1 7/16 PNTD W/CON WA ZC ORG

Hope that helps..
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Old Jun 18, 2012 | 01:39 PM
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Dang! I was 1/16" off on the length. Oh well...age takes its toll.
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Old Jun 19, 2012 | 03:21 AM
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Originally Posted by 80malibu
From the GM parts catalog 74-82
PART-NO. 458985, SCREW ASM-HEX 5/16-18X1 7/16 PNTD W/CON WA ZC ORG

Hope that helps..
Yes thank you everybody!
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