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.
Wave washers offer moderate load capacity and deflection, and are typically used as cushions or spacers. These have multiple waves within the washer. More information about this type of washer, as well as a specification filter, is available in GlobalSpec's Wave Washer Selection Guide.