Methods Machine Tools in Tempe sounds likely (wonders of the Interwebs). There were some other possibles in Tempe but after a quick look I didn't find anything in Mesa but there may be.

Also, remember McMaster-Carr (they are the real-life Acme company that Wile E. Coyote uses) and Grainger. Their shipping is AMAZING and they have EVERYTHING - anvils to zebras (well, maybe not zebras but it's the first "z" thing that came to mind).

Dan