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Old 02-20-2024, 11:25 PM   #12
71CHEVYSHORTBED402
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Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,151
Re: Seat bolt size and thread pitch?

Quote:
Originally Posted by Steeveedee View Post
^ What is a "spin washer"?
Here's a whole bunch of them before refinish. Integrated. You know, the washer that spins around under head but won't pull off. Most are flat washers, some star washers, some split washers. Tooth washers for headlight grounds.

Basically my bench seat bolts are 1" long under head, but 7/8" - ish under the spin flat washer. According to my truck, similar bolts are often 3/4" under the spin washers. Those for my bench seat a pinch longer.
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71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring the truck from ground up. With assys, the guide accts for 1000s details, OEM identifications & part numbers, written in short order. 700+ images of assm., illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

Last edited by 71CHEVYSHORTBED402; 02-21-2024 at 12:25 AM.
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