Structural washers are heavy-duty fastener components engineered to provide superior strength and load distribution in demanding structural applications. Unlike standard flat washers, structural washers are manufactured from high-strength materials, such as carbon steel and stainless steel, and are built to withstand the elevated forces found in bolted connections across construction, bridge, and infrastructure projects. When used in conjunction with high-strength bolts and nuts, structural washers evenly distribute load across a larger bearing surface, reducing stress concentrations and protecting the connected materials from damage under high tension or shear forces.
At Freeway Corporation, we are a trusted structural washer manufacturer with decades of experience producing precision-stamped structural flat washers, ASTM F436 washers, and custom structural washers for a wide range of industries and applications. From bridges and buildings to heavy equipment and industrial machinery, our structural washers are built to deliver consistent performance, long-term durability, and reliable fastener stability under the most demanding conditions.
Structural flat washers are the most widely used type of structural washer, designed to evenly distribute load across a larger surface area in heavy-duty bolted connections. Made from high-strength carbon steel or stainless steel, they prevent fastener damage by spreading clamp force and reducing bearing stress at the joint. Freeway’s structural flat washers are precision-stamped to tight dimensional tolerances, ensuring consistent concentricity, flatness, and thickness across every production run. Whether you need standard structural flat washers or a custom size, we have the tooling and capacity to deliver.
Custom structural washers from Freeway Corporation are available in a wide range of sizes to accommodate different bolt diameters and application requirements. Common inside diameters range from 1/4 inch up to 4-1/2 inches and beyond, with thicknesses tailored for the specific load requirements of each application. Our in-house engineering team works directly with customers to develop custom structural washer solutions, helping refine part geometry, optimize material selection, and ensure every component meets the precise demands of your project. If standard sizes don’t fit your application, we can engineer a solution that does.
Structural steel washers are the preferred choice over standard washers in high-stress applications because they offer greater strength, hardness, and load distribution capacity. These washers are through-hardened to meet the demands of high-strength bolted connections, helping to prevent fastener
loosening and ensuring long-term structural integrity under dynamic or heavy loads. Freeway produces structural steel washers to meet ASTM F436 and other applicable standards, giving engineers and builders confidence in every connection. Whether your application calls for plain, zinc-plated, or hot-dip galvanized finishes, we can accommodate your specifications.
Beyond structural flat washers, Freeway manufactures a variety of other structural washer types to suit diverse project needs. Our offerings include beveled square structural washers, construction washers, and bridge washers, all available in a range of sizes and materials. Carbon steel remains the standard choice for most structural applications, while stainless steel options are available for environments requiring corrosion resistance. We also offer secondary operations, including heat treatment, plating, and coating, to meet specific performance and finish requirements across any application.
Structural washers are essential components in any bolted connection where load distribution, stability, and long-term fastener performance are critical. They are used across a broad range of applications including commercial and residential construction, bridge and highway infrastructure, heavy equipment assembly, HVAC systems, and agricultural and industrial machinery. Available in a variety of materials and sizes, Freeway’s structural washers are engineered to meet the specific demands of your project in both static and dynamic structural environments.
Structural washers are specialized heavy-duty washers used in construction and engineering applications to provide additional strength and load distribution in structural connections. Designed to handle high-stress environments, they are typically used alongside high-strength bolts, nuts, and other fasteners in critical joints and connections.
Structural washers are manufactured from high-strength materials to meet the demands of heavy-duty construction applications. The grade of a structural washer depends on the material and standard specified by the application. Common grades include ASTM F436 (the most widely used standard for structural washers), Grade 8, ASTM A325, and ASTM A490. Freeway manufactures structural washers to ASTM F436 and custom grade specifications upon request.
Structural washers are sized to correspond with the bolt diameter they are paired with, ranging from 1/2 inch to 4-1/2 inches or more. ASTM F436 washers are the most common standard, with sizes engineered to provide optimal load distribution and a secure fit in structural bolted connections. Freeway can also produce custom structural washer sizes outside of standard specifications for specialty applications.
If you have any questions about our precision washers, our brass washer stamping equipment, our custom washer creation process or anything else, including a quote, feel free to contact us! You can speak to the sales team at our Cleveland office directly by calling 216-524-9700, or you can fill out an online contact form. You can also check out our FAQ page for more answers to commonly asked questions. We’re excited to hear from you.
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