The grade 9 steel flat washer has a zinc yellow-chromate plated finish. The flat washer provides a bearing surface for fastener load distribution or is used as a spacer between components. Grade 9 steel, composed of alloy steel, is stronger than grade 8 steel and is often used in applications where high strength is the primary concern. The zinc yellow-chromate plating offers good corrosion resistance.

Washers distribute the load of a fastener across a surface and can also be used as spacers, springs, shims, or locking devices. Several different washer styles fit a variety of application and installation requirements. The most common style is a flat washer. More specialized washers provide additional benefits. A cup washer, for example, helps protect fasteners from electrical currents, while a lock washer offers additional security in an assembled workpiece.

- Flat washer provides a bearing surface for fastener load distribution or acts as a spacer

- Grade 9 steel is stronger than grade 8 steel and often used in applications where high strength is the primary concern

- Zinc yellow-chromate plating offers good corrosion resistance

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