3 in. Strong-Drive® SDWS T40 6-Lobe Washer-Head Coarse-Thread SawTooth®-Point Double-Barrier Coated Timber Screw, Tan (950 Pack) | SIM-SDWS22300DB

Simpson Strong-Tie's Strong-Drive SDWS T40 6-Lobe Washer-Head Coarse-Thread SawTooth-Point Double-Barrier Coated Timber Screw, Tan is built to perform in treated lumber and exterior construction environments where corrosion resistance and structural reliability matter. The Double-Barrier coating provides added protection against moisture exposure and outdoor conditions, helping extend fastener life in demanding jobsite settings. Suitable for contractors and experienced DIY users alike, this timber screw delivers dependable fastening performance for deck framing, fencing, pergolas, retaining walls, and general structural wood connections requiring strong withdrawal resistance and consistent installation results.

• The coarse-thread design improves holding strength in structural wood and heavy timber applications
• The sharp SawTooth point helps reduce driving torque while supporting faster installation into wood materials
• The washer-head profile increases surface contact for enhanced clamping force and secure fastening performance
• The Double-Barrier coating is designed to improve corrosion resistance in exterior and treated lumber applications
• The T40 6-lobe drive helps minimize cam-out and supports efficient high-torque installation