A countersunk washer copper plated is a type of washer that has a countersunk hole in the center, allowing it to sit flush with the surface of the material it is being used with. The washer is also plated with a layer of copper, which provides corrosion resistance and adds a decorative finish to the fastening assembly. Countersunk washers are commonly used in applications where a smooth, finished appearance is desired, such as in furniture assembly or automotive applications. The copper plating helps to protect the washer from rust and corrosion, making it suitable for outdoor use as well.
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