This washer measures 10 mm in inner diameter, 18 mm in outer diameter, and has a thickness of 1.3 mm.
Its small teeth located all around the outer diameter are designed to reinforce your fastening.
This toothed washer is therefore the ultimate locking washer. It helps to prevent the risk of loosening, which can be caused by vibrations or shocks. The teeth of the serrated washer dig into the part being fastened and thus keep the bolt securely in place to prevent it from loosening.
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