What is the difference between a Solon Flange Washer and a Solon Belleville Spring?
Flange washers are a type of Belleville spring. The main distinction of a flange washer is that the OD/ID ratio is small (about 1.75) relative to most Belleville designs. This allows the flange washers to be used in applications where bolts are in close proximity and where spot-faces may exist. In general, the OD of these parts is about the same as the points on a standard nut. In addition, the flat loads for flange washers are generally high to meet the demands of many flange live loading applications.