This 5/8" spring washer is part of the footrest assembly on the Jazzy 600 and Quantum Q600 power chairs. It is also used on the Jazzy 600XL, 610, and Select 7. Additional Quantum models that use this washer include the Quantum Q600XL, Q614, and Q1103 Ultra.
Also known as a Belleville washer or cupped spring washer, this style of mobility hardware provides higher compression resulting in a tighter, more dependable "grip" on moving parts such as pivoting footplates.
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