I keep my bolts/washers/nuts together as a set, I just don't turn the nut very far onto the bolt. 1-2 turns will do. I've found this to be faster than having to dig out the separate pieces. It also helps the untrained hand understand what components should be used. I can grab four bolts (with washers and nut), throw them at a truss juncture, then repeat down the line. Someone comes behind me and gets them hand tight, someone behind him with a pair of socket wrenches, then I go back and check bolts for tightness. That's really about as good as it gets, in my opinion.