Flat washers can relieve pressure, increase friction, seal, shock absorption, and secure. Spring washers can increase the friction between nuts and bolts, prevent bolt loosening, and improve the stability of the connection.

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.