FASTEKS® Wedge lock washers use tension instead of friction to secure critical joints that are exposed to vibration and dynamics loads. The wedge lock washers consist of two identical flat washers which have a set of cams (wedge ramps) on the inner side and serrations on the outside. These two components are glued together to avoid installation mistakes.
The Junker vibration test, complying to DIN 65151, showcases the superior performance of the wedge lock washers in maintaining clamp load:
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