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.
Standard Washers. Washers provide a smooth bearing surface and are used under the head of a bolt and / or a nut. Flat washers are covered under the ASTM specification F844. These washers are unhardened and intended for general use.