M & K Metals understands that metal washers may not seem like a big deal, but to us they are. Standard washers have two main purposes: to distribute the pressure of the nut evenly over the surface so that the surface isn't damaged, and to ensure that the nut is pressed against a smooth surface, which reduces the chance that it will gradually loosen because it's in contact with an uneven surface. Our metal washers are precision machined to offer the flattest surface of any other washer in today’s market.