0.220" x 3" Strong-Tie SDWS22300DBB Timber Screw - Double Barrier Coating, Black | Qty. 950 Crimp Drive Anchors use a variable-speed drill with

use a variable-speed drill with consistent pressure

including floor and roof systems built with I-joists

The hex head provides better driving control

and seats flush

0.220" x 3" Strong-Tie SDWS22300DBB Timber Screw - Double Barrier Coating, Black | Qty. 950 Crimp Drive Anchors use a variable-speed drill withSimpson 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,