We offer the largest selection of SAE Washers in the industry. SAE Washers are also known as Type A Flat Washers, and are named for the Society of Automotive Engineers.
USS Flat Washers
Willie Washer offers a large selection of USS (United States Standard) flat washers. Also known as Type A Wide washers per ASME/ANSI 18.21.1, these standard washers are one of the most common general purpose washers supplied to all industries. USS washers are similar to SAE washers, but USS washers have larger inside diameters, outside diameters, and thicknesses. USS washers are available from 1/4″ to 3″ screw and bolt sizes.
At Willie Washer, we manufacture and stock various USS washer sizes. Our advanced manufacturing capabilities allow us to fabricate custom washers in a variety of materials and finishes to meet the needs of different industries. Whether you require a prototype or a large-scale production run, we have the technology and expertise to ensure consistency and quality.
| Material | Finish | Bolt Size (Metric) | Bolt Size (Standard) | Inside Diameter | Outside Diameter | Thickness | Quantity in Stock | Request a Quote | |
|---|---|---|---|---|---|---|---|---|---|
| View | Stainless Steel - 300 Series | Passivated | 0 | 0.068 | 0.188 | 0.025 | 0 | Add to Quote | |
| View | Brass | Plain | 1 | 0.081 | 0.156 | 0.025 | 32311 | Add to Quote | |
| View | Low Carbon Steel | Zinc & Yellow | 1 | 0.082 | 0.156 | 0.025 | 15700 | Add to Quote | |
| View | Stainless Steel - 300 Series | Plain | 1 | 0.083 | 0.218 | 0.023 | 0 | Add to Quote | |
| View | Stainless Steel - 300 Series | Plain | 1 | 0.083 | 0.218 | 0.025 | 16650 | Add to Quote | |
| View | Stainless Steel - 300 Series | Passivated | 1 | 0.083 | 0.218 | 0.025 | 2001 | Add to Quote | |
| View | Low Carbon Steel | Plain | 1 | 0.084 | 0.154 | 0.025 | 0 | Add to Quote | |
| View | Low Carbon Steel | Zinc & Yellow | 1 | 0.084 | 0.154 | 0.025 | 5801 | Add to Quote | |
| View | Low Carbon Steel | Zinc & Clear | 1 | 0.084 | 0.154 | 0.025 | 25002 | Add to Quote | |
| View | Stainless Steel - 300 Series | Plain | 1 | 0.084 | 0.156 | 0.025 | 30002 | Add to Quote | |
| View | Low Carbon Steel | Plain | 1 | 0.084 | 0.281 | 0.032 | 19001 | Add to Quote | |
| View | Stainless Steel - 300 Series | Plain | 1 | 0.084 | 0.281 | 0.032 | 10190 | Add to Quote |
Customization and Material Options
We offer USS washers in all sizes and in various materials and finishes. The most common material for these standard washers is low carbon steel, but we also offer USS washers in many more materials like spring steel, stainless steel, aluminum, brass, copper and even non-metallic materials. Depending on the application of the part, the finish can be very important, which is why we offer different finishes as well. Willie Washer offers finishes such as zinc and yellow, zinc and clear, hot dip galvanized, nickel, black oxide, and phosphate and oil.
Benefits of SAE Flat Washers
USS flat washers enhance stability in high-stress applications by distributing the load of a fastener across a broader surface area than SAE washers. This minimizes wear on softer materials and prevents fastener pull-through.
Manufacturers rely on Type A flat washers for projects requiring consistent torque and a secure hold. Their uniform thickness ensures even pressure distribution, reducing the risk of loosening under vibration. These washers excel in industrial settings where durability and precision are critical.
Request a Quote for USS Washers
Willie Washer is your trusted source for domestic USS flat washers. Explore our inventory to find the right part that fits your needs. Call us or fill out our contact form to request a quote or receive assistance with finding a USS flat washer that meets the specifications of your project.
