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Flat Washers

Round flat washers are the most common type of washers supplied and they have the most uses. They are used to span oversized holes, and can spread loads over wider areas. They prevent surface damage and embedment from nuts and bolts, and provide a consistent surface for more predictable joints. They can also be used as shims to compensate for tolerance variations.

Willie Washer stocks over 60,000 different special washers for same day shipments. Check our inventory for various sizes, shapes, materials and finishes.

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Inner Diameter (ID)Outer Diameter (OD)Thickness (T)Bolt Size (Inch)MaterialFinishStockRequest a Quote
0.406 in.0.687 in.0.060 in.3/8Low Carbon Steel - SoftCadmium & Yellow0Part Detail/Quote
0.344 in.0.688 in.0.060 in.5/16Low Carbon Steel - Case HardCadmium & Yellow3401Part Detail/Quote
0.471 in.0.688 in.0.042 in.7/16Low Carbon Steel - Case HardCadmium & Yellow0Part Detail/Quote
0.406 in.0.703 in.0.156 in.3/8Spring Steel - HardCadmium & Yellow3435Part Detail/Quote
0.406 in.0.703 in.0.158 in.3/8Spring Steel - HardCadmium & Yellow7802Part Detail/Quote
0.354 in.0.730 in.0.078 in.5/16Spring Steel - HardCadmium & Yellow3951Part Detail/Quote
0.203 in.0.734 in.0.063 in.#10Low Carbon Steel - SoftCadmium & Yellow0Part Detail/Quote
0.281 in.0.734 in.0.062 in.1/4Low Carbon Steel - SoftCadmium & Yellow2001Part Detail/Quote
0.312 in.0.734 in.0.062 in.1/4Low Carbon Steel - SoftCadmium & Yellow520Part Detail/Quote
0.312 in.0.734 in.0.065 in.1/4Low Carbon Steel - SoftCadmium & Yellow0Part Detail/Quote
0.375 in.0.734 in.0.078 in.5/16Low Carbon Steel - SoftCadmium & Yellow410Part Detail/Quote
0.406 in.0.734 in.0.035 in.3/8Low Carbon Steel - SoftCadmium & Yellow5000Part Detail/Quote
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