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A multiturn, crest to crest, waved compression spring is formed with flat circular shim end portions which form load support surfaces at opposite ends of the spring which are generally perpendicular to the spring longitudinal axis. The compression spring includes three distinct wave regions in which

A multiturn, crest to crest, waved compression spring is formed with flat circular shim end portions which form load support surfaces at opposite ends of the spring which are generally perpendicular to the spring longitudinal axis. The compression spring includes three distinct wave regions in which the first distinct wave region has a constant, preselected amplitude, the second distinct wave region has a gradually and incrementally diminishing amplitude and the third distinct wave region has a constant zero amplitude.

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In a crest-to-crest compression spring formed from a continuous elongate flat wire strip which is generally spirally wound in a circle around a longitudinal spring axis and a common edge of the strip to form a plurality of individual spring turns lying adjacent each other so as to form a multiturn c

In a crest-to-crest compression spring formed from a continuous elongate flat wire strip which is generally spirally wound in a circle around a longitudinal spring axis and a common edge of the strip to form a plurality of individual spring turns lying adjacent each other so as to form a multiturn compression spring, each spring turn comprising a plurality of successive waves which waves include separate wave crest and wave trough portions, the improvement comprising three distinct wave regions wherein the amplitude of the waves disposed in one region generally differs from the amplitude of the waves in the other two regions, the first wave region being disposed in approximately the center turns of said compression spring and including one or more spring turns, the amplitude of all of the waves in the first wave region being a constant amplitude, the second wave region including two separate second wave region portions disposed generally adjacent to and outwardly of said first wave region on opposite ends thereof and having a free height, said second wave region portions each including at least one spring turn, the amplitude of all the waves in the second region being variable and generally unequal to the first wave region amplitude, said second wave region wave amplitude varying from the first wave region amplitude down to a zero wave amplitude uniformly within said second wave region, the third wave region beginning where said second wave region wave amplitude reaches said zero wave amplitude, said third wave region including two separate third wave region portions disposed generally adjacent to and outwardly of said two second wave region portions, each third wave region including between three quarter and one and one-half spring turns, the amplitude of the wave in each said third wave region being a constant zero amplitude so as to form a flat wave in each of said third wave region portions, whereby said third wave region portions form flat circular shim portions having a substantially uniform thickness at opposite ends of said compression spring which are generally perpendicular to said spring longitudinal axis and which are generally parallel to each other.