The Stovebolt Site Forums The Shop Area General Truck Talk Suggested sources for fastener specifications and replacements?

For most parts, I look at:
Classic Parts : https://www.classicparts.com/
Chevs of the 40s : https://www.chevsofthe40s.com/
Jim Carter : http://www.oldchevytrucks.com/

Make a list, and compare pricing/shipping.

Classic Parts & Jim Carter have sales every so often - get on their mailing list.
They both might give discounts for orders over a certain amount (ask them - it used to be for $300+ orders).

The rubber parts from Steele Rubber are almost always worth the higher prices.