Meet the National Hardware 1/2 in x 1-1/2 in Hex Black Steel Lag Screw—a purpose-built fastener engineered for secure wood connections where you need reliable bite and straightforward installation. The hex head accepts a standard wrench or socket, making it a practical choice for both DIY projects and professional work.
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Size and drive: 1/2 in diameter with 1-1/2 in length and a coarse thread for strong engagement in soft or hardwood.
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Material and finish: solid steel core finished in a discreet black coating that blends with dark finishes and provides a clean, project-ready appearance.
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Fastening characteristics: hex head for easy driving with common hand tools or a ratchet, reducing cam-out and enabling better grip in tight spaces.
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Packaging: sold as a single lag screw in carded packaging for precise replacements and project planning.
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Type: lag screw designed for timber-to-timber or timber-to-framing connections, ideal for framing, deck components, posts, and bracket installations.
Why choose this National Hardware lag screw? Its coarse thread design bites into wood with minimal splitting and distributes load along the screw shaft for a sturdy, long-lasting connection. The 1/2" diameter provides substantial shear and withdrawal resistance for lightweight to moderate structural projects. When you’re building or repairing wooden structures, pairing this lag screw with proper pilot holes and, if needed, a washer, gives you consistent performance across jobs—from furniture projects to outdoor decking frames.
Practical usage tips: pre-drill a pilot hole to guide the screw and reduce wood splitting, especially near edges or in denser hardwoods. Drive until the hex head sits flush or slightly below the surface for a clean, professional look. Always consider the load requirements and choose the right length to ensure full engagement with the mating material.
