122040 bolt

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Jul 24, 2018 | 03:34 PM

ballen06

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Joined: Nov 2004

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From: Palm Bay Florida

122040 bolt

1969 L46

Could someone please give me the specs on this bolt? (122040) It attaches the rear end of the radiator support rod... as shown on (11-13/A5) in the AIM.

I searched the internet and could not find it.

Thanks.

Jul 24, 2018 | 04:14 PM

Easy Mike

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From: Southbound

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I believe you want 5/16" - 18 x 1 1/2"

Jul 24, 2018 | 04:18 PM

0Willcox Corvette

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From: Jeffersonville Indiana 812-288-7103

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15

Quote:

Originally Posted by ballen06

Our system which has number changes listed all the back to the late 70's shows 122040 bolt number changed to 454872, I suspect this happened somewhere between 69 and 72. 454872 was a shouldered bolt and was a grade 5 5/16-18 bolt 1 5/8 long.

I believe it was also used for the upper bracket. Original bolt markings may have varied but I also think this would have been a TR marked bolt.

I edited this because Mike's length is shorter than what I show... and this is probably why the number changed. There is plenty of room inside there for any 5/16" bolt that will work.

And another edit... looks like the number changed between 69 and 70 for those keeping score.

Willcox

Last edited by Willcox Corvette; Jul 24, 2018 at 05:06 PM.

Jul 24, 2018 | 05:15 PM

ballen06

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From: Palm Bay Florida

Thanks to all.

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