Did the bolt snap off? If not, you're in luck. I have some of those tabbed washers, exactly as shown. I'll send you a PM.

EDIT: just took another look at that picture. My washers look exactly like that, except, they DO NOT have the small holes he mentions for the end of the spring. Wouldn't be hard, though, to add them. These are stainless steel I think. You can have one if you want. I sent you a PM.