On 8 Jan 2005 10:20:43 -0800, wrote:

what is a fender washer? in which situation is it used?

I'm sure there are some standards, but GENERALLY they are flat washers
that are larger than a normal flat washer.

One website lists things like small, regular, large, very large and
light and heavy ... various diameters, various thicknesses.
Generally, again, used when the material is soft and a larger earing
surface is needed.