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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
0.114 in.0.375 in.0.035 in.#3Low Carbon Steel - SoftCopper0Part Detail/Quote
0.128 in.0.375 in.0.020 in.#4Low Carbon Steel - SoftCopper0Part Detail/Quote
0.129 in.0.375 in.0.030 in.#4Low Carbon Steel - SoftCopper0Part Detail/Quote
0.147 in.0.375 in.0.032 in.#5Low Carbon Steel - SoftCopper0Part Detail/Quote
0.164 in.0.375 in.0.062 in.#6Low Carbon Steel - SoftCopper30001Part Detail/Quote
0.139 in.0.385 in.0.032 in.#5Low Carbon Steel - SoftCopper0Part Detail/Quote
0.171 in.0.393 in.0.046 in.#8Low Carbon Steel - SoftCopper5001Part Detail/Quote
0.138 in.0.400 in.0.038 in.#5Low Carbon Steel - SoftCopper0Part Detail/Quote
0.206 in.0.404 in.0.042 in.#10Low Carbon Steel - SoftCopper9800Part Detail/Quote
0.203 in.0.406 in.0.040 in.#10Low Carbon Steel - SoftCopper0Part Detail/Quote
0.142 in.0.432 in.0.035 in.#5Low Carbon Steel - Case HardCopper10001Part Detail/Quote
0.109 in.0.437 in.0.031 in.#3Low Carbon Steel - SoftCopper25301Part Detail/Quote
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