The washer systems are cited to "secure bolted joints with tension instead of friction." They comprise a pair of washers with cams on one side and radial teeth on the opposite side. Since the cam angle is greater than the thread pitch, a wedge effect is created by the cams. This is emphasized to prevent the bolt from rotating loose in severe vibration and dynamic load.
Complete illustrations, charts, graphs, and descriptions present steel EN 1.7182, stainless steel, SMO254, Inconel/Hastelloy C-276, and Inconel 718 washer designs and configurations.
A chart depicts washer steel type, applications, bolt size availabilities, washer types, treatment and surface coating, hardness, corrosion resistance, bolt grades, and temperature ranges.
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