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.
A pedestal washer is a smaller washer that fits underneath your main washing machine, allowing you to do two loads of laundry at the same time. One thing to consider is that pedestal washers raise the main washer off the floor by 12-16 inches, making it easier to reach inside the wash bin, but also taking up more space.