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Old 09-13-2023, 01:12 AM   #9
71CHEVYSHORTBED402
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Join Date: Feb 2009
Location: Northern Nevada
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Re: Hood to Cowl Seal screws

Quote:
Originally Posted by Gregski View Post
glad I found this thread, forgive me for resurrecting an old one, but my '71 girl took #10 screws and half of them were still loose as a goose
This gauge says #10. https://www.ebay.com/itm/27339713907...3-aO9ccudB_KQ1

Sometimes I think old #10 are a pinch smaller than new. It's a good idea to try #8 first, but I don't know, why does it seem new #8 door sill screws will install where the original screws were #10, the new paint?? Hmmm.

Never mind the #8 and 10 business, other then gr. 5 recessed hex head body bolts with spin washers, I believe..............

The cowl panel and seal mount to the cowl’s top using six phosphate #2 phillips pan head tap screws with spin washers. The screw threads are #10" x 5/8". Another option may have been phosphate recessed hex head screws with spin washers.

The cowl panel’s top rear mounts to the cowl with four stainless #2 phillips pan head tap screws and J-nuts. The screw threads are #10 x 1/2". The J-nuts are 1/2" (W) x 5/8" (T) with a 7/16" center hole to edge, and are stamped “P”.
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Tony

71 Custom Deluxe, SWB, 2WD, 402, A/C.

I developed an assembly guide (kit) for restoring this truck from the ground up, complete with details including full hardware descriptions. Much of the info. applies to all 67-72 GM. My build thread, with some info. about the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025

Last edited by 71CHEVYSHORTBED402; 09-13-2023 at 01:20 AM.
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