Designed for use with A325 structural screws, studs, and nuts, these washers are often used for construction and exterior building applications.

Hot-dipped galvanized washers are corrosion resistant in wet environments.

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These thick washers are designed to support structural screws, studs, and nuts. The steel base is hot-dipped galvanized to form a thick coating that holds up ten times better than zinc plating in wet environments. Since they are strong and rust resistant, these washers are often used for construction and on building exteriors. They meet ISO 7416 (formerly DIN 6916), which is an international standard for washer dimensions. Use them with DIN 6914 structural hex head bolts and DIN 6915 structural hex nuts.

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Square washers fit into slots and channels and have flat sides to keep them from rotating. They are wider and thicker than most round washers, making them good for distributing heavy loads.

Galvanized steel washers are 10 times as corrosion resistant as zinc-plated steel washers.

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As a screw is tightened, these washers flatten to add tension to the joint and prevent loosening from small amounts of vibration.

Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc- and zinc yellow-chromate plated washers.

Washers that meet ASME B18.21.1 adhere to strict dimensional standards.

For technical drawings and 3-D models, click on a part number.