0.220" x 4" Strong-Tie SDWS22400DBB-R50 Timber Screw - Double Barrier Coating, Black | Qty. 50 CJT Concealed Joist Ties Dagger-Guard Coating: Corrosion-resistant finish tested

Dagger-Guard Coating: Corrosion-resistant finish tested to 1

Electrical box and conduit attachment

Code-Compliant – Listed in IAPMO UES ER-192

and maintenance environments

Insert the anchor through the fixture and into the hole until the washer sits flush

0.220" x 4" Strong-Tie SDWS22400DBB-R50 Timber Screw - Double Barrier Coating, Black | Qty. 50 CJT Concealed Joist Ties Dagger-Guard Coating: Corrosion-resistant finish testedSimpson 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,