The Anahuac Mayab University is a private institution of Catholic inspiration founded in 1984.
They are used in the same applications as fender washers. A spherical washer is part of a self-aligning nut; it is a washer with one radiused surface, which is designed to be used in conjunction with a mating nut in order to correct for up to several degrees of misalignment between parts.
(Plumbing washers, the kind found in a faucet, serve a third purpose, namely to provide a water seal, but that's a subject for another day.). The two most common improper uses of washers are: 1  To allow use of a bolt or nut too small for the hole in the part being secured, or. 2  To make it possible to tighten a bolt or nut that's too long.