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Square Washers
Square washers are flat, square-shaped washers designed to provide a greater bearing surface than standard round washers. The larger surface area distributes loads more evenly and helps prevent damage to the surface material. Square washers are used in rugged applications like timber construction and structural applications that benefit from the extra stability and load support.
At Fastco, we distribute square flat washers in a full range of sizes, styles, and material options. With fast nationwide shipping, volume discounts, and helpful service, you can rely on Fastco for top-quality square plate washers with quick order turnaround.
At Fastco, we distribute square flat washers in a full range of sizes, styles, and material options. With fast nationwide shipping, volume discounts, and helpful service, you can rely on Fastco for top-quality square plate washers with quick order turnaround.
Order Square Flat Washers Today
Use the options below to order the square washers required for your application. Questions? Contact our office in Tacoma, WA, and our team will gladly assist you in finding the proper square plate washers for your application.Square Washers from Fastco
We offer square washers in multiple sizes, materials, and styles, including standard flat square washers, slotted square washers, "no hole" options, and more. We also offer imported and domestic square washers to ensure you get the exact products required for your job.Material and Finish Options
- Plain Steel: Strong and lower-cost for dry general-purpose jobs
- Hot-Dip Galvanized Steel: Corrosion-resistant for outdoor or high-moisture environments
- Stainless Steel: Offers excellent corrosion resistance and durability for harsh or marine applications
Size Ranges
- Thickness: 1/4" – 5/8"
- Width/Length: 1" - 5"
- Hole Diameter Range: 5/8” – 1½”
- "No hole" options available
What are Square Washers Used For?
Because square washers provide a larger bearing surface than standard round washers, they can distribute load pressure over a wider area, reducing the risk of material deformation. They also prevent pull-through in softer materials and add stability in high-load fastening applications. These features make square washers popular choices for heavy-duty construction, structural steel, manufacturing, and other industrial sectors.Industrial Applications
- Timber and wood framing
- Structural steel
- Heavy equipment
- Pole line and utility hardware
- Agricultural machinery
- Bridges and infrastructure projects
Square Washer FAQs
Why Use a Square Washer?
Square washers provide a broader bearing surface than round washers, meaning they can spread load pressure across a wider area for heavy-duty applications.How to Remove Square Washers?
To remove a square washer, loosen and remove the bolt or nut securing it. If the washer is stuck due to corrosion or paint, gently tap it with a mallet or use a flat tool to pry it free. For rusted washers, penetrating oil can help release them.What is the Difference Between Round and Square Washers?
Round washers are most common for general bolts and screws. Square washers, with a larger surface area and flat edges, offer more stability and load-bearing capacity for heavy-duty or structural applications.What are Square Washers Called?
Square washers are sometimes referred to as "construction square plate washers." This term is common in structural and timber construction applications.Square Plate Washers vs. Beveled Square Washers vs. Square Strut Washers
- Square Plate Washers: Flat washers with a square profile that evenly distribute loads and prevent pull-through. Used in both general and structural applications.
- Beveled Square Washers: Feature an angled surface area to match the slope of uneven structural beams.
- Square Strut Washers: Designed specifically to fit into metal strut channels. They hold bolts or threaded rods in place during assembly.
Buy Square Washers from Fastco
If you're looking for a trusted supplier of square washers and other industrial fasteners, Fastco has you covered. Contact us today to learn how Fastco can provide you with square flat washers in bulk at great prices. You can also request a quote online for pricing estimates on special orders. Need additional fasteners? Check out our full selection of washers, anchors, bolts, and more.
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Fastco Inc. offers custom threading, cutting and bending services to meet your project needs.
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