Profile: Fan Disc Corp. is an ISO 9001 certified company. We specialize in the production of large diameters and special material springs. Our disc springs are used in special nuclear applications. Our disc springs are precision Belleville springs made of high carbon spring steel, alloy steel, stainless and heat resisting steels & non-ferrous materials, which are used in power transmission components such as clutches, brakes and transmissions. Disc springs are used singly or in stacks to achieve desired load and travel. In genral, they function best under conditions requiring very high load in confined space or short travel. Disc springs used in parallel stack arrangements may be useful as load damping devices. The friction of the surface generates heat and dissipates energy under load releases - a useful hysteresis affect under certain conditions.