Here is a set providing a wide choice of cogwheel/settings icons. Free PSD created and released by Jiri Silha.
Freebies tagged settings
This free PSD contains 24 settings wheel icons. 16x16px size. PSD & CSH included. Designed by Sebastian Hager.
24 settings wheel icons PSD
Free PSD and HTML/CSS snippet of a settings panel with brushed metal interface elements / toggle switches. Source: Pixelsdaily.
