Enclosure grounding spring

[Valoosj]

Does anybody know where I might find these springs that ground the enclosure, as seen on this pcb?

[AdamM]

looks like a battery contact spring to me

[R.G.]

Looks like a battery contact spring to me, too.

[armdnrdy]

I use this type of grounding lug attached to the enclosure bottom plate screw.

http://www.smallbearelec.com/servlet/Detail?no=803

[Valoosj]

Thanks. This helped me search for them. Now to find a shop where they sell them in quantities <1000 

[Jdansti]

The ground lugs that armdnrdy suggested would provide the most positive connection. If you still want a spring, and you don't care about looks, take a 3-4 inch piece of stripped 18 or 20-ga solid copper wire and wrap it around a pencil or Sharpie to make your own spring. Play with the spacing of the wraps. I've successfully done this with a homemade spring soldered 360 deg around its base to the ground plane. The other end of the spring contacted the enclosure's lid.