Where can I get screws, nuts, bolts and other hardware most cheaply?
I'm planning to build a car-top bike rack based on this gentleman's design:
As I've been pricing materials, I'm pleased to find that the wood, pipe, tubing and conduit will cost me only about $20. I'll need to buy one tool (a rigid backsaw) for about $10. I was hoping to get away with less than $100 out of pocket for a rack to hold four bikes, but then I hit the screw aisle.
Picking out machine screws, nuts, and wing nuts for the uprights and jotting down prices, I hit almost $10 for those items alone. Then I looked for galvanized angle brackets to attach the uprights to the base, and those plus the screws, etc to attach them were close to $35! Once I started looking at U-bolts and other things I'd need to put the whole thing together, I got quite discouraged.
So, is there a place to go where I can get those kinds of things at more of a discount? I tried McMaster/Carr, but they sell only in bulk quantities. Once I'm an old established tinkerer, I'm sure I'll have a workshop full of hardware bits that I can make work, but for now, I'm flummoxed. Suggestions? Or am I just "screwed"? :-)