http://www.mcmaster.com
I order all of my screws, nuts, washers, etc. from there. Just this morning I placed an order for some more of the polycarbonate angle (1 1/2 x 1 1/2in. legs) and some 4mm set screws. They have a warehouse only about 20-30mi. from where I live, so I get my order the day after I order it.
SH Z-Car, Custom Crawler, 8s Savage,
12s XTM XLB 1/7 buggy,
4wd 4-link rear/IFS Pro4 truck,
Custom Hyper 10 Short Course,
Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz