Industrial Metal Supply is a fun place to go for metal. They have a showroom full of pre-cut material you can buy by the pc or you can have stuff cut to specific lengths. Another great place for nuts, bolts, washers, all thread, hooks, cables and all kinds of goodies like that is Mikes bolts, nuts and washers. It's on the West side at 67th ave/Grand
Don't forget Apache Reclamation for general goodies. It's at about Central and I-17 in Downtown Phx.
Apache Reclamation & Electronics Inc. - Home