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Picot Washer

Picot Washers are locking washers with serrated or toothed edges designed to prevent loosening of fasteners under vibration and dynamic loads. They are manufactured to ASTM, DIN, and ISO standards in carbon steel, stainless steel, spring steel, or brass. The serrated teeth bite into the surface, providing a secure grip and enhanced load distribution. Available in internal, external, and heavy-duty variants with multiple coatings, they ensure durability and resistance to vibration loosening. They are widely used in automotive, machinery, aerospace, electronics, and general engineering applications.