MUDGUARD REPAIR WASHER 10MM M10 X 40MM BRIGHT ZINC PLATED Flat Mudguard Washer Large 50mm outside diameter Bright Zinc Plated for increased corrosion resistance Washers provide a smooth surface for the nut or bolt to bear on making it less likely to loosen as a result of an uneven fastening surface The main purpose of a washer is to distribute the load under a bolt head or the nut face Suitable for us on all manner of bolting applications Can be used with all types of bolts & nuts