John
It's been awhile since I picked up a JCWhitney catalog, but I do remember them having nut and bolt kits at one time. They were various sizes and lengths. Harbor freight also has some of these kits too. I'm not sure of the quality, but it sure beats a trip to the hardware store every time you turn around. I'm not for sure what you're working on or what you need a bunch of hardware for, but LMC has bolt kits for just about everything on these old trucks.

1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket