Simpson #8 x 1-5/8" 305 Stainless Steel Deck-Drive DWP Wood Screw by Simpson is engineered for deck, dock, and general exterior fastening applications where reliable corrosion protection is a priority. Featuring a specially designed sharp point and unique box-thread profile, this flat-head wood screw drives cleanly into the majority of wood used in today's deck boards - reducing driving torque and extending battery tool runtime. The Type 305 stainless steel construction makes it a dependable choice for outdoor structures exposed to moisture and the elements, including decking, boardwalks, fascia, and trim work.

Key Features

• Type 305 stainless steel material - provides strong corrosion resistance for exterior applications exposed to moisture, humidity, and weather, helping deck and dock structures maintain integrity over time.
• Unique box-thread design with raised-ridge technology - greatly reduces driving torque so installers can drive more screws per battery charge, improving efficiency on large decking projects.
• Specially designed sharp point - penetrates hard wood products with ease, reducing the need for pre-drilling and speeding up installation on deck boards and exterior trim.
• T20 6-lobe drive - delivers a secure bit-to-screw fit that results in an easy, controlled drive and extended bit life, minimizing cam-out during installation.
• Flat head profile - sits flush with or slightly below the surface for a clean, finished appearance on decking and trim applications.
• Compatible with wood, engineered wood, and polymer materials - provides versatile fastening across a wide range of modern deck board materials without compromising holding power.
• #8 x 1-5/8" sizing - an ideal length for fastening deck boards and exterior trim, offering strong holding power without over-penetrating thinner materials.

Why This Product

• Built for corrosive outdoor environments - the Type 305 stainless steel finish resists rust and degradation in wet, high-humidity settings, making these screws well-suited for decks, docks, and boardwalks that face regular moisture exposure.
• Reduces installer fatigue and tool wear - the box-thread geometry and raised-ridge technology lower driving torque compared to standard thread designs, which translates directly to more screws driven on a single battery charge and less strain on the installer.
• Versatile fit for today's decking materials - the sharp point and box-thread profile are specifically designed to work with the range of wood, engineered wood, and polymer deck board products commonly used in modern construction.
• Secure 6-lobe T20 drive system - minimizes cam-out and bit slipping, which means faster, cleaner installs and less frequent bit replacement on large exterior projects like decking, fascia, and millwork.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 1-5/8 in.
• Head Type: Flat Head
• Head Diameter: 0.335 in.
• Drive Type: T20 6-Lobe
• Thread Type: Box Threads
• Point Type: Sharp Point
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Approx. Count Per Lb.: 150
• Color: None
• Country of Origin: Taiwan

Available Pack Options

• S08162WP1: 1 Lb - includes (1) T20 6-lobe driver bit
• S08162WPP: 350 Pk - includes (1) T20 6-lobe driver bit
• S08162WP5: 5 Lb - includes (1) T20 6-lobe driver bit
• S08162WPB: 4000 Pk - includes (2) T20 6-lobe driver bits

Approved Applications

• Decking, docks, and boardwalks - exterior structural fastening where moisture resistance is essential
• Fascia and trim - clean flat-head profile is ideal for finishing and millwork applications
• General exterior construction - suitable for use with wood, engineered wood, and polymer materials in outdoor environments

Frequently Asked Questions

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

The DWP Wood Screw is designed for use with wood, engineered wood, and polymer materials, making it compatible with the majority of deck board types used in modern residential and commercial exterior construction.

What is the difference between Type 305 and Type 316 stainless steel for this application?

Type 305 stainless steel offers strong corrosion resistance suitable for most exterior deck, dock, and general outdoor applications. For seaside or coastal environments where exposure to saltwater is a factor, a Type 316 stainless steel version of the DWP screw is available as an alternative.

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

The unique box-thread design with raised-ridge technology significantly reduces the driving torque required to set each screw. This allows installers to drive more screws on a single battery charge and helps prevent overdriving - especially important when working with composite or engineered wood deck boards.

What drive bit is required for the Deck-Drive DWP Wood Screw?

These screws use a T20 6-lobe drive, which requires a T20 Torx-compatible bit. The 6-lobe interface provides a secure bit fit that reduces cam-out and extends bit life during high-volume deck fastening work.

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