Flat Washers for Screws and Fastener Assemblies

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Flat Washers for Screws and Fastener Assemblies

It's a small part that does a big job. Flat washers improve load distribution, protect surfaces from damage, and prevent fastener pull-through — all critical in professional construction. The Contractors Site supplies flat washers for screws, bolts, and lag applications across a full range of sizes and materials.

  • Contractor-grade
  • Based in Brantford, Ontario
  • Shipped across Canada

1 product

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  • 3/8-inch Galvanized Hex NutsSale

    Screws & Fasteners

    3/8-inch Galvanized Hex Nuts

    $4.00

Steel, Galvanized, and Stainless Options

Distribute the Load. Protect the Surface.

Under a bolt head or nut, a washer spreads clamping force over a larger area — reducing the risk of pulling through soft materials, crushing engineered products, or damaging finished surfaces. In construction, that matters on everything from ledger connections to exterior cladding fastening.

We stock washers in the materials that match real job site conditions — standard steel for interior work, galvanized for exterior and treated lumber applications, and stainless steel for the builds where long-term corrosion resistance is non-negotiable.

Collection of tools including pliers, screwdrivers, and wrenches on a textured surface

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From the bench

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Reviews

What Contractors Say

  • Great Quality - Fair Pricing.

    The fasteners I bought from here are solid and reliable. You can tell these are contractor-grade products, not cheap knock-offs.

    Amanda R.Builder

  • Exactly what I needed.

    The Blind Mark Locator worked perfectly for my drywall project. No guessing, no mistakes. Makes the job fast and professional.

    Chris L.Home Improvement Contractor

  • My go-to supplier now.

    I love that I can find everything in one place. Composite decking, tapes, adhesives—all quality stuff. This site is a lifesaver for contractors.

    Daniel P.Renovation Specialist

  • Free Shipping Options

    Canada Post carrier-calculated rates at checkout. Ask us about local job site delivery.

  • Top Quality Materials

    Contractor-grade tools, fasteners, and materials built to perform on every job.

  • Contact Us

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Help

Frequently Asked Questions

Still have questions?

Our team can help you pick the right tool for the job.

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What types of contractor tools do you offer?

We specialize in high-quality tools for calculating, measuring, leveling, and locating, essential for contractors and professionals in the construction industry. Our inventory includes laser measures, levels, stud finders, measuring tapes, and more.

Are the tools suitable for professional contractors?

Yes, our tools are designed to meet the needs of both professional contractors and DIY enthusiasts.

How accurate are the measuring and leveling tools?

Our tools are precision-engineered for accuracy, meeting industry standards for professional use.

What is the durability of your tools like?

Our tools are built with high-quality materials to ensure they can withstand tough working conditions.

Do you offer warranties on your products?

Yes, most of our products come with a manufacturer’s warranty. Please refer to the product description for specific warranty details.

How do I place an order?

Simply browse our product catalog, select the tools you need, and add them to your cart. Once ready, proceed to checkout, where you can complete your purchase securely.

Can I get product recommendations or advice?

Absolutely! Our customer service team is available to provide recommendations and answer any questions you may have about our tools.