Bolt sizes

[Jrgunn5150]

Now that I'm closing in on final assembly, I'm of course missing some bolts.

If anyone can help me out or direct me to the sizes of the following,

Hood to hinge bolts.

Seat to floor

Seat belt to floor

Stepside fender to box ( I think this is 5/8 - 16, but my threads may need chasing.)



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[MikeB]

I have removed/replaced all those bolts except for the stepside fender. I don't remember their sizes, but I'd suggest buying some bolts in these sizes to use as gauges:

5/16-18
5/16-24
3/8-16
3/8-24
7/16-14
7/16-20


Or, these are some handy gauges to have if you're a newbie to bolt sizes and plan to do a lot of work on your truck.

https://www.boltdepot.com/Product-Details.aspx?product=16988

https://www.amazon.com/StainlessTow...d=1499565636&sr=1-14&keywords=bolt+size+gauge

 

[75gmck25]

If you can find original GM bolts from the junkyard, they are easier to use than standard bolts from HD or the auto parts store.

The GM bolts are threaded and sized just like the HD bolts, but the end of the GM body bolt comes to a short point instead of being square cut. This makes it much easier to get it lined up with a hole and get the threads started when you are trying to bolt on a fender or hood hinges. Some auto parts stores sell the original style bolts, but you may have to look around.

Bruce

 

[Jrgunn5150]

If you can find original GM bolts from the junkyard, they are easier to use than standard bolts from HD or the auto parts store.

The GM bolts are threaded and sized just like the HD bolts, but the end of the GM body bolt comes to a short point instead of being square cut. This makes it much easier to get it lined up with a hole and get the threads started when you are trying to bolt on a fender or hood hinges. Some auto parts stores sell the original style bolts, but you may have to look around.

Bruce

I've found a bunch to get it together for mockup and paint, but I had planned to head to the junkyard and swipe a ton of bolts just for that reason, the factory are way easier to get started.

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