Don:
Take a closer look at the link in the first entry above, and then look at the pictures of the switch where the 6/32 screws are still held onto the yoke with the "nonmetallic washer."
This will defeat the first item you mentioned, because there is no true "metal to metal" contact, so this leaves only one left, and that is to use an equipment bonding jumper connected to the swich yoke and to the equipment grounding conductors in and to the box.
[This message has been edited by Joe Tedesco (edited 04-29-2002).]
