Disc spring washer

The disc spring washer, also known as the Belleville spring washer, was invented by the Frenchman Belleville. The DIN6796 disc spring washer (HDS series) is a lock washer designed for bolt and screw connections. It is designed to DIN 6796 for the connection of medium or high strength bolts and screws. The large bearing load and elastic recovery make the HDS series very effective, and the bolt tension can withstand slack due to wear, creep, slack, thermal expansion, shrinkage, or compression of the seal. The HDS series has increased the elasticity of the screw several times. It can effectively replace the ordinary spring washer, but it is not suitable as a lock washer or flat washer combination. Since the HDS series is a disc spring that can be folded or folded. The combination of the combination modes can increase the deformation amount of the disc spring group, and the combination of the overlapping modes can increase the spring force of the disc spring group. The ideal installation method is to flatten as much as possible, the closer to the flattening state, the faster the tension increases, and the appropriate bolt pull is obtained without the need of a torque wrench.