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Domestic Flat Washers | Stainless Steel & Bronze

Flat washers are utilized in the construction and assembly industry to boost efficiency and protect fragile surfaces. Domestic flat washers are utilized to ensure a safe distribution of weight while applying a bolt. In addition, stainless steel flat washers are also designed to eliminate corrosion issues that are common on metallic surfaces. Willie Washer offers a large selection of domestic flat washers in materials such as stainless steel, bronze, and nylon. 

Nylon flat washers are embedded directly under machine screws to help eliminate excess noise. USS and SAE washers are the two most common flat washers used. SAE flat Washers are Type A narrow, with a smaller OD size and are thinner than the typical USS washers. USS flat washers, on the other hand, are Type A wide washers. Willie Washers has a wide range of materials and finishes for both USS and SAE washers from which you can choose. We also offer other types of washers and parts such as clipped OD washers, D shaped ID washers, slotted square washers, and fender washers. Our catalog of stampings, machined parts, and washers are made with high-quality materials to meet your requirements.

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Inner Diameter (ID)Outer Diameter (OD)Thickness (T)Bolt Size (Inch)MaterialFinishStockRequest a Quote
0.328 in.0.400 in.0.030 in.5/16Brass24500Part Detail/Quote
0.328 in.0.406 in.0.015 in.5/16Stainless - 300 Series0Part Detail/Quote
0.328 in.0.406 in.0.018 in.5/16Stainless - 300 Series50300Part Detail/Quote
0.330 in.0.406 in.0.031 in.5/16Rubber11501Part Detail/Quote
0.340 in.0.406 in.0.015 in.5/16PTFE15302Part Detail/Quote
0.343 in.0.406 in.0.009 in.5/16Low Carbon Steel - Soft17001Part Detail/Quote
0.344 in.0.406 in.0.010 in.5/16Low Carbon Steel - Soft41001Part Detail/Quote
0.370 in.0.413 in.0.020 in.5/16Low Carbon Steel - SoftPhosphate & Oil18500Part Detail/Quote
0.327 in.0.418 in.0.032 in.5/16Brass1601Part Detail/Quote
0.389 in.0.418 in.0.026 in.5/16Low Carbon Steel - Soft0Part Detail/Quote
0.328 in.0.420 in.0.016 in.5/16Brass4801Part Detail/Quote
0.328 in.0.422 in.0.005 in.5/16Stainless - 300 Series22500Part Detail/Quote
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