Grip-Rite PrimeGuard Max Stainless Steel Trim Head Deck Screws are made for wood-to-wood projects in coastal regions. Ideal for decks, railing, siding, and anywhere a thin shank and smaller head is necessary. T 17 point removes the need for pre-drilling, and coarse threads create a strong hold in wood substrates. T-15 star drive reduces the chance of cam outs during installation, and the small-profile trim head is easily concealed in the final product. Stainless steel construction protects against harsh environmental factors and is intended for use in all treated wood and near coastal regions. Get the job done right with Grip-Rite construction screws!