Multiple contact points distribute the load on these wave disc springs better than curved and notched disc springs. They're also known as wave spring washers.

Raised tabs, known as fingers, enable these springs to compress without widening, so they won't bind or deform in housings with little clearance. Use with ball bearings in precision and high-speed drive assemblies to reduce noise, vibration, and wear.

Notches make these springs more flexible than Belleville disc springs and allow liquid to flow around the spring, even while it's in use.