Also referred to as Belleville Washers, Disc Springs, Spring Washers, Conical Washers, Cupped Spring Washers, or Conical Spring Washers
Used to apply a flexible pre-load to a bolted joint or bearing
Corrosion resistant phosphor bronze
Can be used in a stack below the bolt head to apply a greater pre-load
Variety of uses including vibration reduction and pressure indicators
Commonly used in automotive applications, aerospace, firearms and general machinery
Conical Belleville washers are used primarily to add pre-load to a nut and bolt assembly. When placed under the head of the bolt, they add a layer of force between the bolt head and the installation surface. This serves as a resistance to vibration to prevent accidental loosening, which is why these washers are commonly found on automobiles, airplanes, and heavy machinery.
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Belleville Conical Washers - OverviewAll About Washers - Types & Materials, USS vs SAE
