GRK RSS 5/16 In. x 4 In. Black Exterior Wood Structural Screw Screw (400-Count)

GRK RSS Black Structural Screws deliver high strength fastening with a clean black finish for structural wood projects.

Designed for fast, easy installation, they drive into most wood without pre drilling while providing exceptional holding power.

The washer head creates a strong, secure connection, and the corrosion resistant coating is approved for interior and exterior use, including treated lumber.

Ideal for decks, pergolas, timber framing, and other structural applications.