Tools, parts, equipment, and supplies
Graybar is only decent place in San Francisco that has a full stock of rack-mount hardware and networking parts and tools. This is the place to go for racks, rails, rack-shelves, and bulk cable. This is not a computer store. This is an industrial warehouse. They sell nuts-and-bolts hardware for racks, not rack-mountable computer hardware.
1760 CESAR CHAVEZ #A SAN FRANCISCO, CA 94124 415-970-5444
Central Computers http://www.centralcomputers.com/
US Store Hours
Mon-Fri: 9am - 7:30pm
Sat., Sun., and Holidays: 10:30am - 6pm
San Francisco 837 Howard Street San Francisco, CA 94103 Tel: 415-495-5888 Fax: 415-896-5888
They will ship memory in San Francisco via messenger, so if you need a part and you can't get out then you can still get it fast from these guys. Straighforward and good place to work with.
415-281-8600 100 First st. San Francisco, CA 94105