Feature - The flat washer is widely used to reduce friction between the screws and nuts to make them more firmly fixed. Also, it can distribute loads and increase the load-bearing surface, providing a good connection to machinery. Application - Good replacement parts for use in most machinery industries, such as various pumps, sump plugs, home and office appliance, automation equipment, electronic equipment. Also can be applied in most furniture, DIY handmade projects, etc.Notice - Please confirm the diameter of the flat washer before purchasing it.