DIN 7980 Spring lock washers for cylinder head screws, also known as M12 spring washers, are used in the automotive industry to secure the cylinder head screws. These spring washers provide improved vibration and thermal resistance and are ideal for applications where normal washers do not provide sufficient resistance. The washers are designed with a spring for increased tension, allowing for a tighter grip on the screw. The spring washers are also designed with a small lip that bites into the screw, providing an even tighter hold. The DIN 7980 Spring lock washers for cylinder head screws are made from high-grade stainless steel for superior corrosion resistance and long-lasting performance.