Bolt size for Diff? - Defender Source
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Old July 3rd, 2005, 01:46 PM
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David Williams
'97 Yellow ST
Join Date: Jan 2004
Location: Tulsa, OK
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Bolt size for Diff?

I am installing QT diff guards with safari gard rock gard. My problem is that bolts are not long enough for the both of them. I went to Lowe's to some longer bolts. The bolt size I thought would match up the best was a 10 / 1.25, that didnt work. So, what is the correct size for the two bolt the back and bottom of the diff?

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Old July 3rd, 2005, 03:42 PM
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Robert Dassler
1994 D90
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I'm not sure the exact thread...I know that they are British standard...3/8 x 20 maybe...I've never been able ro find replacements. For repairs or accessory mounting I usually drill the holes oversize and tap to 7/16 UNF.
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Old July 4th, 2005, 02:02 AM
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marc olivares
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3/8-20 and you'll find them here
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Old July 5th, 2005, 08:28 AM
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jim pendleton
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Tap it to 7/16 like Rob said. I do not even drill before tapping it the larger size, but I am pendy.

The larger bolt with coarser threads will suit your needs better.

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