This genuine replacement part is a MTD flat washer flange sized .339 X .640 inch X .033 inch. This MTD flat metal washer flange has a variety of applications for many types of equipment including lawn mowers, snow blowers, tillers, edgers, and log splitters. Washers are important to the proper functioning of the product. They spread the load of a threaded fastener, such as a bolt or nut, or can be used as a spacer. However, they can often wear down or become damaged through extended normal use and may not last the full life cycle of the product, leading to improper operation. This high quality OEM replacement part is sourced directly from the manufacturer, and is sold individually. This MTD flat washer flange has multiple applications in a wide range of products from Craftsman, Cub Cadet, Ryobi, Troy-Bilt, Yard Machines, MTD, Huskee, Montgomery, Wards, Bolens, Yard-Man, Turf King, MasterCut, and more. Please note: original part number 166763 is now obsolete, and manufacturer has replaced the original part number with this part.