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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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.

Black-oxide steel washers are mildly corrosion resistant in dry environments.

Zinc-plated steel washers are corrosion resistant in wet environments.

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.

Black-oxide steel washers are mildly corrosion resistant in dry environments.

316 stainless steel washers have excellent resistance to chemicals and salt water. They may be mildly magnetic.

18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.

Zinc- and zinc yellow-chromate plated steel washers are corrosion resistant in wet environments.

Washers that meet ASME B18.21.1 adhere to strict dimensional standards. Steel washers also meet standards for material properties.

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Compared to standard split lock washers, these are thicker and have larger outside diameters. As a screw is tightened, they flatten to add tension to the joint and prevent loosening from small amounts of vibration.

Steel washers are known for their strength. They're zinc yellow-chromate plated for corrosion resistance in wet environments.

Washers that meet ASME B18.21.1 adhere to strict dimensional standards. Steel washers also meet standards for material properties.

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