Search:

I may be wrong but I think they go on the outside of the scales. The washers go between the tang and the scales.

Washers - Micro Fasteners

Try this or call them. They are very helpful on the phone. Not all their products are on the sith.

Airprotcopper

Try Micro Fasteners 800-892-6917. They are sending me samples of the washers they carry and may have what you are looking for.