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while the self-drilling point eliminates the need for predrilling
Buttress threads available in #8 sizes for added holding power
and rafters to supporting structures
Light commercial and engineered wood construction
0.220" x 3" Strong-Tie SDWS22300DBB Timber Screw - Double Barrier Coating, Black | Qty. 950 Crimp Drive Anchors while the self-drilling point eliminatesSimpson 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,