We stock a wide range of washers - standard flat for use in just about any assembly - it's main task is to spread the load across a wider area, which comes in particularly useful when dealing with softer materials. Mudguard washers have a large diameter along with the square plate washers which are strong and thick with a large surface area when bolting together beams, joints etc; and shakeproof washers which are designed so that under locking pressure the teeth are forced into the mating product to provide a locking feature resistant to vibration.