0.220" x 6" Strong-Tie SDWS22600DBB Timber Screw - Double Barrier Coating, Black | Qty. 500 Joist Hanger Nails The 1-5/8" x 3-1/4" Back-to-Back

The 1-5/8" x 3-1/4" Back-to-Back Strut Channel with Short Slots 20 ft

The RCKW clip and RCKWS stiffener are sold separately

Refer to manufacturer technical documentation for exact load ratings per model and finish option

Steel-to-steel attachments in drywall and ceiling framing

0.220" x 6" Strong-Tie SDWS22600DBB Timber Screw - Double Barrier Coating, Black | Qty. 500 Joist Hanger Nails The 1-5/8" x 3-1/4" Back-to-BackSimpson 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,