Danny, to be a shop shark you have to know how to figure out a bolt size. Just by eyeballing, you can guess one or two sizes. Like 5/16 3/8...Then try some bolts. Any bolts laying around.
By "size" do you mean thread size or length?..or both? You can't be held back waiting for someone to go out and measure, you will never get done. Force yourself to identify the few sizes used on the trucks by eyesite or testing. You need a cheap thread gauge and a set of calipers.... or just 4 different bolt sizes. This is a real basic question. Take this as a constructive recommendation not a dis. You are asking for someone to do more effort than you could do. There will be members with TF that will be kind enough to do it, but it seems a bit hard to understand your position.
