Simpson #8 x 1-1/4" Deck-Drive DWP Wood Screw in Type 305 Stainless Steel is engineered for deck, dock, and general exterior fastening applications where long-lasting corrosion resistance is essential. Featuring a T20 6-lobe drive, sharp point, and unique box-thread design, this flat-head wood screw drives efficiently into the majority of wood and engineered wood products used in today's deck boards, fascia, and trim installations. The Type 305 stainless steel construction provides reliable protection against moisture and oxidation in outdoor environments, making it a go-to choice for professionals and DIYers tackling exterior wood fastening projects.

Key Features

• Unique box-thread design with raised-ridge technology - greatly reduces driving torque so you can drive more screws per battery charge, improving efficiency on large decking projects
• Specially designed sharp point - penetrates hard wood and engineered wood products with ease, eliminating the need for pre-drilling in most applications and speeding up installation
• T20 6-lobe drive - delivers a secure bit fit that results in easy driving and extended bit life, reducing stripped heads and bit replacements on the job
• Type 305 stainless steel material and finish - provides strong corrosion resistance for exterior wood applications including decks, docks, boardwalks, fascia, and trim exposed to moisture and weather
• Flat head profile - sits flush or countersinks into the wood surface for a clean, professional appearance on deck boards and visible trim surfaces
• #8 x 1-1/4" size with 0.335" head diameter - right-sized for fastening deck boards, fascia, and trim where a compact, low-profile fastener is needed without sacrificing holding strength

Why This Product

• Built for exterior wood fastening where corrosion is a concern - Type 305 stainless steel construction stands up to moisture-rich environments found on decks, docks, and boardwalks, helping extend the service life of your fastened assemblies without rust staining the wood surface.
• Reduces installer fatigue and battery drain - the box-thread design with raised-ridge technology cuts driving torque significantly, meaning fewer battery changes and less strain on your wrist over a full day of fastening.
• Versatile across common exterior wood applications - compatible with wood, engineered wood, and polymer materials, this screw handles the broad range of deck board products and trim materials commonly used in modern exterior construction.
• Trusted Simpson Strong-Drive engineering - the Deck-Drive DWP line is purpose-built for wood decking applications, with a sharp point and drive geometry that work together to minimize blowout and surface damage on finished deck and trim work.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 1-1/4 in.
• Head Diameter: 0.335 in.
• Head Type: Flat Head
• Drive Type: T20 6-Lobe
• Thread Type: Box Threads
• Point Type: Sharp Point
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Color: None
• Approx. Count Per Lb.: 176
• Country of Origin: Taiwan

Available Pack Options

• S08125WP1: 1 Lb - includes (1) T20 6-lobe driver bit
• S08125WP5: 5 Lb - includes (1) T20 6-lobe driver bit
• S08125WPB: 5000 Pk - includes (2) T20 6-lobe driver bits

Approved Applications

• Deck boards - exterior wood and engineered wood decking surfaces
• Docks and boardwalks - moisture-exposed structural decking where corrosion resistance is required
• Fascia and trim - finishing and millwork applications on exterior structures
• General exterior wood fastening - applications where extra protection from corrosion is needed

Frequently Asked Questions

What materials can the Deck-Drive DWP Wood Screw be used with?

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 today's deck boards, as well as fascia and trim applications.

Why does this screw use a T20 6-lobe drive instead of a standard Phillips or square drive?

The T20 6-lobe drive provides a more secure bit-to-fastener fit compared to traditional drive types. This secure engagement results in easier driving, reduced cam-out, and longer bit life - which is especially beneficial when driving large quantities of screws during deck or dock installations.

What is the advantage of the box-thread design on this screw?

The unique box-thread design with raised-ridge technology greatly reduces driving torque. This means less resistance as the screw drives into the wood, allowing you to drive more screws on a single battery charge and reducing strain during extended use on decking projects.

When should I use Type 305 stainless steel versus a different stainless grade?

Type 305 stainless steel provides strong corrosion resistance suitable for most exterior deck, dock, and general outdoor wood fastening applications. For seaside or coastal environments where saltwater exposure is a factor, a higher-grade stainless steel option would be more appropriate.

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