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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
0.125 in.0.188 in.0.007 in.#4Stainless - 300 Series28220Part Detail/Quote
0.125 in.0.188 in.0.010 in.#4Brass35600Part Detail/Quote
0.125 in.0.188 in.0.010 in.#4Copper12000Part Detail/Quote
0.125 in.0.188 in.0.015 in.#4Low Carbon Steel - Soft3501Part Detail/Quote
0.125 in.0.188 in.0.020 in.#4Aluminum113801Part Detail/Quote
0.128 in.0.188 in.0.010 in.#4Low Carbon Steel - SoftZinc & Clear0Part Detail/Quote
0.129 in.0.188 in.0.007 in.#4Stainless - 300 Series0Part Detail/Quote
0.129 in.0.188 in.0.010 in.#4Stainless - 300 Series0Part Detail/Quote
0.129 in.0.188 in.0.016 in.#4Stainless - 300 Series0Part Detail/Quote
0.130 in.0.190 in.0.010 in.#5Beryllium Copper7801Part Detail/Quote
0.108 in.0.189 in.0.020 in.#3Low Carbon Steel - SoftZinc & Yellow0Part Detail/Quote
0.109 in.0.189 in.0.020 in.#3Spring Steel - HardZinc & Yellow11200Part Detail/Quote
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