Car gasket is a component used to connect structures, usually a flat metal ring, placed between the connected part and the nut. It can effectively protect the surface of the connected structure from scratches from the nut, while dispersing the burden of the nut on the connected structure. There are various types of washers, each with different sizes, thicknesses, and materials, so their functions also vary.

Automotive fasteners play a crucial role in automotive manufacturing and maintenance. Connecting the engine and other components of the vehicle: Automotive fasteners are used to connect the engine and chassis, as well as other critical components, to ensure their stability and safety during vehicle operation.