This is sold as a set that contains eight washers. These parts attach to the tank and are made out of metal. They are genuine items that are supplied by the original equipment manufacturer for use with Craftsman air compressors. During replacement, it may require a wrench to help install these parts correctly. They will require replacing if they become bent or broken.
This is an authentic Craftsman replacement part, sourced from the original manufacturer for use with air compressors. The special screw is used with several different models of compressors and the application of the screw can vary based on the model of the machine. This item is available as an individual replacement part.