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Belleville washers, also known as coned-disc springs, conical spring washers, and disc springs, are cone-shaped washers with spring capabilities used to provide high loads in small areas. They are pressed against the underside of a bolt head into the fastened material to control vibrations, absorb shocks, increase pressure load, or act as spacers. Disc springs may be used singularly or in different stacking configurations depending on the application requirement. Belleville washers are used in various industries such as chemical, energy, transportation, and automotive industries to name a few.