The Simpson Strong-Tie® Strong-Drive® SDW Truss-Ply Screw makes it simple to connect multiple layers of wood, like plated trusses and solid-sawn lumber, without the hassle of flipping or lifting heavy assemblies. Designed with extra holding power and available in lengths sized for 2-, 3-, and 4-ply trusses, these screws give you a strong, code-approved connection you can trust.

With a wide washer-style head for maximum grip, a bold thread pattern that pulls members tight, and a SawTooth® point that starts fast without predrilling, the SDW is built to save time while delivering professional results. Whether you’re framing, reinforcing, or fastening engineered lumber, this screw makes the job quicker, easier, and stronger.

Key Features

• Built for Multi-Ply Wood – Perfect for fastening 2-, 3-, and 4-ply trusses from one side without flipping heavy members.
• Strong Hold – Large washer head with nibs delivers maximum bearing area for a solid connection.
• Smooth Installation – SawTooth® point starts fast and eliminates predrilling in most jobs.
• Positive Drive Engagement – 6-lobe T40 drive reduces stripping and extends bit life (replacement bit: BIT40T-134-R2).
• Pack Options – Retail and mini-bulk packs include one T40 driver bit; bulk packs include two driver bits.