Teks 1/4 x 3 Inch Wood-to-Metal Self-Drilling Screws, 40PCS, for Roof/Subfloor Decking, Trailer Beds, & Headers, Rust Resistant Climaseal® Coating, Star Drive, T-25 Bit Sold Separately

Meet the Teks 1/4 x 3 Inch Wood-to-Metal Self-Drilling Screws — a purpose-built fastener designed to make wood-to-steel joins stronger, quicker, and more reliable. With 40 screws in each pack, these are ready to tackle everything from rugged outdoor builds to precision indoor framing, including roof decking, subfloors, trailer beds, and steel-framed headers.

What makes them stand out

• Self-drilling efficiency: No pre-drill required for many wood-to-metal applications. The integrated drill-point and flute cut and remove material while properly sizing the hole for self-tapping threads, speeding up your project.
• Wings that ream a clean entry: Special wing features widen the wood entry just enough to prevent thread engagement during drilling, reducing binding, splitting, and misalignment for a smoother install.
• Star drive for maximum bite: The star (Torx) drive delivers superior contact and minimizes stripping, even under high-torque driving with a drill or impact driver. A T-25 bit is sold separately for ideal performance.
• Rust-resistant Climaseal coating: Built to withstand outdoor exposure, humidity, and corrosive environments, helping your joints stay secure year after year.
• Right-sized for wood-to-metal builds: 1/4" diameter by 3" length strikes a balance between strong holding power and clean fastening when attaching roof decking, subfloor decking, trailer bed components, or headers to steel frames.
• Convenient package: 40 screws per pack mean fewer trips to the hardware store and fewer delays on larger projects.

Ideal use cases

• Roof decking to steel framing: fasten boards or panels securely against metal rafters or purlins, even in exposed outdoor conditions.
• Subfloor decking to a metal frame: create solid, level floors with a single, versatile fastener type designed for mixed-material builds.
• Trailer bed assembly: attach decking to a steel chassis with confidence in load-bearing performance and long-term corrosion resistance.
• Wood headers to steel frames: establish durable connections that resist loosening over time under repeated loading.

Who should consider these screws

• Carpenters, builders, and DIYers tackling outdoor sheds, trailers, decks, or any project blending wood with metal.
• Anyone seeking faster installation without compromising hold strength or longevity in demanding environments.

Practical tips for best results

• Use with a drill or impact driver and a T-25 bit (sold separately) for consistent bite and drive depth.
• For optimal thread engagement, ensure the target wood and metal thickness align with the 3" screw length to prevent over-penetration.
• In moist or coastal locations, the Climaseal coating provides excellent corrosion resistance, but pair with proper flashing or sealant where needed for added protection.
• Clamp pieces firmly and drive straight to avoid bending or cam-out, especially when working with dense woods or thicker metal frames.

Whether you're retrofitting a trailer, assembling a steel-framed deck, or attaching heavy decking to metal supports, these Teks Wood-to-Metal Self-Drilling Screws deliver dependable strength, streamlined installation, and lasting protection against the elements.