Founded in 1967, Key Bellevilles manufactures a wide range of disc springs. It offers all the standard metric sizes, which are manufactured to the specifications of the Deutsches Institut f r Normung e.V. The company has more than 10,000 sizes in stock. Key Bellevilles has a more than 75,000-square-foot facility and a fully equipped office. Key Bellevilles disc springs have design standards based on DIN 2092 specifications and are manufactured to DIN 2093 specifications. Key Bellevilles manufactures special metals for high temperature and cryogenics. The company is located in Leechburg, Pa.