The characteristics of disc spring is "maximum force in minimum space". Specification of conventienal disc springs is as below: OD:8.0mm to 600mm Thickness:0.2mm to 40mm Production as per the standard of DIN2093 and GB/T1972. We also can customize the disc spring as per customer's requirements. We also deal in diaphragm springs and slotted disc springs. Size as below: OD:20-500mm ID:10-250mm Thickness:0.2-5mm Height:2-30mm Pls contact with us if you are interested.