0.220" x 8" Strong-Tie SDWS22800DBB Timber Screw - Double Barrier Coating, Black | Qty. 400 Quik Drive Wood Decking Systems Ensure the backing material and

Ensure the backing material and environment are suitable for 410 stainless steel

Not recommended for wall pours greater than 4 feet high

ideal for interior and light exterior applications

engineered wood and polymer materials

0.220" x 8" Strong-Tie SDWS22800DBB Timber Screw - Double Barrier Coating, Black | Qty. 400 Quik Drive Wood Decking Systems Ensure the backing material andSimpson Strong Tie SDWS Timber Screws (Exterior Grade) are your go to fasteners when strength and weather resistance matter. Ideal for outdoor framing, landscaping, or heavy duty builds, these structural wood screws help DIYers get pro level results without the need for pre drilling. Coated with a high performance Double Barrier finish, they resist corrosion from rain, moisture, and treated lumber. The large washer head adds serious clamping power,