Free Height - is the height of the wave spring in the unloaded position.
Working Height - is the height the spring is compressed to for delivering the desired force.
Load - is the force the wave spring exerts when compressed.
Rate - is the change in load per unit deflection, generally given in pounds per inch. Rate could be specified between the minimum and maximum working heights.
Deflection - is the height that a spring is compressed from its free unloaded position.
Diameter Expansion - is the outward movement of the spring during compression that results in increased outside diameter.