Simpson Deck-Drive DWP Wood Screw in #7 x 1-1/4" with Type 305 Stainless Steel finish is engineered by Simpson for deck, dock, and general exterior fastening applications where dependable corrosion protection is a priority. Featuring a trim head profile, sharp point tip, and proprietary box-thread design, this exterior wood screw delivers fast, reliable penetration into the majority of wood and engineered wood materials used in modern deck construction, fascia, and finishing trim work. The Type 305 stainless steel construction resists oxidation and surface degradation in demanding outdoor environments, making it a trusted choice for boardwalks, docks, and exposed wood assemblies.

Key Features

• Type 305 Stainless Steel material - provides strong corrosion resistance for outdoor, moisture-exposed, and general exterior applications, helping fasteners maintain holding strength over time
• Unique box-thread design with raised-ridge technology - greatly reduces driving torque, so installers can drive more screws per battery charge and work more efficiently without fatigue
• Specially designed sharp point - penetrates hardwood, softwood, engineered wood, and polymer deck materials with ease, reducing splitting and eliminating the need for pre-drilling in most applications
• T15 6-Lobe drive - provides a secure, precise bit fit that minimizes cam-out, resulting in a smooth, consistent drive and extended bit life on the job
• Trim head profile with 0.230 in. head diameter - sits flush and low-profile against the wood surface, making it well-suited for fascia, millwork, and finishing trim where appearance matters
• #7 x 1-1/4" size - a compact dimension ideally matched for fastening fascia boards, deck trim, and thinner exterior wood components

Why This Product

• The box-thread design reduces driving resistance, which means less wear on cordless tool batteries and faster project completion - a direct advantage on large decking or dock jobs requiring hundreds of fasteners
• The sharp point tip eliminates the need for pre-drilling in most wood and engineered wood substrates, saving significant installation time on deck boards, fascia, and trim applications
• Type 305 stainless steel construction offers corrosion protection suited for outdoor and wet-environment use, making this screw a dependable choice for docks, boardwalks, and exterior wood structures exposed to the elements
• The trim head form factor keeps fasteners nearly invisible at the surface, delivering a cleaner finished appearance on visible fascia, millwork, and finishing trim where aesthetics are as important as holding strength

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #7
• Length: 1-1/4 in.
• Head Type: Trim Head
• Head Diameter: 0.230 in.
• Drive Type: T15 6-Lobe
• Thread Type: Box Threads
• Point Type: Sharp Point
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Approx. Count Per Lb.: 264
• Country of Origin: Taiwan

Available Pack Options

• S07125WP1: 1 Lb - includes (1) T15 6-lobe driver bit
• S07125WPP: 350 Pk - includes (1) T15 6-lobe driver bit
• S07125WP5: 5 Lb - includes (1) T15 6-lobe driver bit
• S07125WPB: 5000 Pk - includes (2) T15 6-lobe driver bits

Approved Applications

• Deck boards and decking surfaces
• Docks and boardwalks
• Exterior fascia and finishing trim
• Millwork and general exterior wood applications
• Engineered wood and polymer deck board materials

Frequently Asked Questions

What types of materials are compatible with the Deck-Drive DWP Wood Screw?

The Deck-Drive DWP Wood Screw is designed for use with wood, engineered wood, and polymer materials. Its sharp point tip and box-thread design make it well-suited for the majority of wood products used in deck boards, fascia, and exterior trim applications.

Why does the box-thread design matter for installation efficiency?

The unique box-thread design with raised-ridge technology greatly reduces driving torque compared to standard thread profiles. This means the screw requires less power to drive, which allows installers to complete more fastening work on a single cordless tool battery charge - a meaningful advantage on large decking, dock, or boardwalk projects.

Is the T15 6-Lobe drive compatible with standard installer bits?

Yes. The T15 6-Lobe drive is a widely recognized drive format that accepts standard T15 bits. The 6-lobe geometry provides a secure bit-to-screw engagement that minimizes cam-out during driving, extending bit life and delivering a consistent, controlled drive on each fastener.

Is Type 305 stainless steel suitable for dock and outdoor wet-environment applications?

Type 305 stainless steel provides strong corrosion resistance appropriate for deck, dock, boardwalk, and general exterior applications where moisture exposure is a regular factor. For seaside and coastal environments with higher salt exposure, a higher-grade stainless steel material would be recommended.

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