They are such a small piece to the puzzle, but nonetheless, washers play a big role in the overall picture. Washers, like the ones we offer at MCDS PRO, are important for a few reasons. Washers reduce corrosion by acting as a smooth barrier between two surfaces. They are also used to distribute the load of a threaded fastener, like a screw or a nut. When it comes to your projects, a high-quality washer can make all the difference.