Either I drew it and never got paid or I drew it for free. All vector (.cdr) & easy to edit. Enjoy!
Just a start (as of May 2012); I'll add more as I peruse my archives.

On the other hand, if you need something simple but accurate & in clean vector—a screw, a grommet, a wiring harness—send me the info and request a quote. Fast turn-around.