The Simpson Strong-Drive SDW Truss-Ply structural wood screw is a high-strength fastener purpose-built for joining multi-ply lumber assemblies, including plated trusses and solid sawn lumber. Engineered to install from one side without predrilling, this 0.220" shank diameter, 4-5/8" screw eliminates the need to lift and flip heavy truss assemblies - saving significant labor time on the job site. Code listed to meet IRC and IBC requirements for common framing applications, it delivers reliable structural performance wherever multi-ply wood-to-wood connections are required.

Key Features

• No predrilling required - the SawTooth Point cuts cleanly through wood without a pilot hole, speeding up installation and reducing tool requirements on the job site
• Low Profile Head at 0.760" diameter - sits flush and tight against the wood surface for a clean, secure connection without protruding hardware interfering with adjacent members
• 4-5/8" length with 1-3/8" thread engagement - optimized for multi-ply truss fastening, providing the penetration depth needed for structural-grade connections in 2-, 3-, and 4-ply assemblies
• T40 6-Lobe drive - resists cam-out under high torque, giving the installer greater control and reducing driver bit wear during production framing
• E-coat Electrocoating finish - provides a uniform, corrosion-resistant barrier suited for interior structural wood applications
• One-side installation design - multi-ply trusses and beams can be fastened without flipping or repositioning heavy assemblies, reducing physical strain and improving workflow efficiency
• IRC and IBC code listed - meets requirements for several common framing applications, supporting permit approval and inspection confidence

Why This Product

• Designed specifically for truss-ply fastening, this screw solves the practical challenge of joining plated trusses and multi-ply lumber without requiring predrilling or assembly flipping - a direct time and labor savings on structural framing projects
• The SawTooth Point and T40 6-Lobe drive work together to make installation fast and controlled, reducing tool wear and driver slippage even in dense or layered lumber
• Code compliance with both IRC and IBC standards means this screw is appropriate for permitted residential and commercial framing applications, reducing the risk of inspection issues
• Available in lengths optimized for 2-, 3-, and 4-ply truss assemblies, so contractors can match the fastener precisely to the structural requirement without improvising with general-purpose screws

Specifications

• Brand: Simpson Strong-Tie
• Shank Diameter (in.): 0.220
• Length (in.): 4 5/8
• Head Diameter (in.): 0.760
• Head Type: Low Profile Head
• Drive Type: T40 6-Lobe
• Thread Length (in.): 1 3/8
• Point Type: SawTooth Point
• Coating: E-coat Electrocoating
• Finish: E-coat Electrocoating
• Country of Origin: Taiwan

Available Pack Options

• SDW22458-R50: 50 Pk - includes one 6-lobe, T-40 driver bit
• SDW22458MB: 200 Pk - includes one 6-lobe, T-40 driver bit
• SDW22458: 600 Pk - includes two 6-lobe, T-40 driver bits

Approved Applications

• Fastening Wood-to-Wood
• Truss-Ply Fastening

Frequently Asked Questions

Does the Simpson SDW Truss-Ply screw require predrilling before installation?

No. The SawTooth Point is specifically designed to drive into wood without a pilot hole, allowing for fast, one-step installation in multi-ply truss and lumber assemblies.

What drive bit is needed for this screw?

This screw uses a T40 6-Lobe drive, which provides high torque transfer and cam-out resistance. You will need a T40 6-Lobe (Torx-style) driver bit to install it.

Is this screw suitable for exterior or pressure-treated lumber applications?

The SDW Truss-Ply screw with E-coat Electrocoating is rated for interior structural wood applications. It is not specified in the product data for exterior or pressure-treated lumber use - consult Simpson's published code listings to confirm suitability for your specific application.

What code standards does the Simpson SDW Truss-Ply screw meet?

The SDW Truss-Ply screw is code listed and meets IRC (International Residential Code) and IBC (International Building Code) requirements for several common framing applications, making it suitable for use in permitted residential and commercial construction projects.