0.220" x 8" Strong-Tie SDWS22800DBB Timber Screw - Double Barrier Coating, Black | Qty. 400 Wood-to-Metal Self-Drilling Screws 316 stainless steel - corrosion-resistant

316 stainless steel - corrosion-resistant performance for outdoor use

Built from 7-gauge steel and hot-dip galvanized for long-lasting corrosion resistance

This screw also features a slender shank to minimize splitting and a diamond point for easier driving

Avoid overtightening to preserve washer integrity and fastener performance

Do not use in exterior or high-moisture environments

0.220" x 8" Strong-Tie SDWS22800DBB Timber Screw - Double Barrier Coating, Black | Qty. 400 Wood-to-Metal Self-Drilling Screws 316 stainless steel - corrosion-resistantSimpson 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,