DIN 7980 washers are reinforced spring lock washers designed to work with high-strength screws. They maintain the elastic function of helical washers, but with greater thickness and rigidity that improve their performance in joints subjected to high tightening torques.
They are used in assemblies where the fastening is subjected to high loads, intense vibration or continuous dynamic stresses, such as heavy machinery, transmissions, industrial equipment and metal structures with greater mechanical demands.
DIN 7980 washers: high preload in a small space
At CHAVESBAO, we offer DIN 7980 washers in steel and stainless steel, with coatings such as zinc plating for indoor use and A2 and A4 stainless steel versions for more aggressive environments. They are designed to work with class 8.8, 10.9 or higher fasteners, where an elastic element capable of withstanding higher stresses is required.
Their reinforced helical profile provides a higher recovery force than a standard DIN 127 washer, which helps to maintain the preload of the screw in demanding service conditions. They are particularly recommended for joints where maintaining the tightening tension is critical for the safety and durability of the assembly.
