Simpson Deck-Drive DWP Wood Screw in Type 305 Stainless Steel is a purpose-built fastener from Simpson designed for deck, dock, and general exterior wood applications where reliable corrosion protection is essential. Featuring a flat head profile, T25 6-lobe drive, and a #10 x 1" size, this screw delivers consistent, low-torque installation into the wood materials most commonly found in today's deck boards - making it a go-to choice for both decking projects and exterior trim and fascia work.

Key Features

• Type 305 Stainless Steel construction - provides strong resistance to corrosion and oxidation, keeping fasteners secure and intact in demanding outdoor and wet environments without sacrificing structural integrity.
• Unique box thread design with raised-ridge technology - significantly reduces driving torque, so installers can drive more fasteners per battery charge and complete jobs faster with less tool fatigue.
• Specially designed sharp point - penetrates hardwood and dense wood products with ease, reducing the need for pre-drilling and speeding up installation across a wide range of decking materials.
• T25 6-lobe drive - offers a secure, precise bit fit that virtually eliminates cam-out, resulting in smooth, consistent driving and extended bit life over the course of a project.
• Flat head profile with 0.335" head diameter - sits flush with the surface of the board for a clean, professional finish on deck boards, fascia, trim, and millwork applications.
• Compatible with wood, engineered wood, and polymer materials - versatile enough for use across the broad range of decking and exterior products used in modern construction and renovation projects.
• Available in a variety of sizes - gives contractors and DIYers the flexibility to select the right fastener for decking, fascia, trim, and other exterior carpentry tasks.

Why This Product

• Engineered specifically for exterior decking environments - the Type 305 stainless steel finish is selected for its corrosion resistance in deck, dock, and outdoor applications where fasteners are continuously exposed to moisture and weather.
• Lower driving torque means real productivity gains - the box thread design reduces resistance during installation, allowing more screws to be driven per battery charge - a meaningful advantage on large decking or dock projects.
• A sharp point that eliminates extra steps - the precision-engineered tip drives cleanly into hardwood and dense boards without pre-drilling, saving time and labor on every run of decking.
• Flush, professional-grade finish every time - the flat head sits cleanly at the surface, making these fasteners well suited for visible applications like fascia, trim, and finish millwork where appearance matters.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #10
• Length: 1 in.
• Head Type: Flat Head
• Head Diameter: 0.335 in.
• Drive Type: T25 6-Lobe
• Thread Type: Box Threads
• Point Type: Sharp Point
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Approximate Count Per Lb.: 172
• Country of Origin: Taiwan

Available Pack Options

• S10100WP1: 1 Lb - includes (1) T25 6-lobe driver bit
• S10100WP5: 5 Lb - includes (1) T25 6-lobe driver bit
• S10100WPB: 4500 Pk - includes (2) T25 6-lobe driver bits

Approved Applications

• Decking, docks, and boardwalks
• Finishing, millwork, and trim
• General exterior wood fastening applications
• Engineered wood and polymer decking materials
• Fascia and exterior trim installation

Frequently Asked Questions

What type of wood materials are these screws compatible with?

The Deck-Drive DWP Wood SS screw is designed for use with wood, engineered wood, and polymer materials. The sharp point and box thread design make it well suited for the majority of wood products used in today's deck boards, including hardwood and denser species that might otherwise require pre-drilling.

Why does the box thread design matter for installation efficiency?

The unique box thread design incorporates raised-ridge technology that greatly reduces driving torque during installation. This means less resistance for your drill or driver, which translates to more screws driven per battery charge - a significant advantage on large decking, dock, or boardwalk projects.

What bit is required to drive these screws?

These screws require a T25 6-lobe (Torx-style) bit. The 6-lobe drive provides a secure, tight fit between the bit and the screw head, minimizing cam-out and extending bit life throughout the project.

Are these screws appropriate for coastal or saltwater environments?

These screws are made from Type 305 stainless steel, which provides strong corrosion resistance for deck, dock, and general outdoor applications. For seaside and coastal environments with direct saltwater exposure, a Type 316 stainless steel version of the DWP is the recommended choice, as Type 316 offers enhanced resistance to salt and chloride-rich conditions.

Note: Product dimensions and/or thread length may differ from picture.