Simpson Deck-Drive DWP Wood Screw in #8 x 1-1/4" with Type 316 Stainless Steel is a high-performance fastener engineered by Simpson for deck, dock, boardwalk, and general exterior wood applications where superior corrosion resistance is essential. The Type 316 stainless steel finish provides enhanced protection against saltwater, moisture, and harsh coastal environments, making this flat-head wood screw the right choice for seaside and marine-adjacent installations. With a T20 6-lobe drive and sharp-point tip, this screw drives cleanly into standard wood, engineered wood, and polymer decking materials without predrilling in most applications.

Key Features

• Type 316 Stainless Steel material - delivers elevated resistance to saltwater, chlorides, and coastal moisture, making it appropriate for seaside decks, docks, and other demanding outdoor environments where standard fasteners would corrode prematurely.
• Unique box thread design with raised-ridge technology - greatly reduces driving torque so you can drive more screws on a single battery charge, improving productivity and reducing installer fatigue during large deck projects.
• Specially designed sharp point - penetrates hardwood and dense wood products with ease, reducing the need for predrilling and speeding up installation across a wide range of deck board materials.
• T20 6-lobe drive - provides a secure, positive bit engagement that results in an easy, controlled drive and extended bit life, minimizing cam-out and reducing wasted time on bit replacement.
• Flat head profile - sits flush with the surface of the decking for a clean, snag-free finish that is both functional and visually consistent across deck boards.
• Compatible with wood, engineered wood, and polymer materials - gives installers flexibility across a wide variety of modern deck board products without switching fasteners.

Why This Product

• Built for coastal and high-moisture environments - Type 316 stainless steel offers a higher level of corrosion protection than standard 304 stainless or galvanized alternatives, making it the appropriate choice for docks, waterfront decks, and boardwalks exposed to saltwater spray or standing moisture.
• Reduces battery and bit consumption on large jobs - the box thread design with raised-ridge technology lowers driving torque, which translates directly into more screws per battery charge and longer bit life on high-volume deck installations.
• Sharp-point tip eliminates extra prep steps - the specially designed sharp point bores into most wood and engineered wood deck boards without predrilling, saving time and simplifying the installation workflow.
• Versatile fit for today's decking products - the #8 x 1-1/4" size and broad material compatibility make this screw a practical option for decking, fascia, trim, and millwork across a variety of exterior wood applications.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 1-1/4 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 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Color: None
• Approx. Count per Lb.: 185
• Country of Origin: Taiwan

Available Pack Options

• T08125WP1: 1 Lb - includes (1) T20 6-lobe driver bit
• T08125WP5: 5 Lb - includes (1) T20 6-lobe driver bit
• T08125WPB: 5000 Pk - includes (2) T20 6-lobe driver bits

Approved Applications

• Deck boards and decking surfaces
• Docks and boardwalks
• General exterior wood fastening
• Fascia and trim fastening
• Millwork and finishing applications

Frequently Asked Questions

Why should I choose Type 316 stainless steel over other finishes for my deck project?

Type 316 stainless steel offers enhanced resistance to saltwater, chlorides, and harsh outdoor moisture compared to standard finishes. This makes it particularly well-suited for seaside decks, coastal docks, and any exterior application where elevated corrosion protection is required over the long term.

What materials can these Deck-Drive DWP screws fasten?

The DWP Wood screw is designed for use with wood, engineered wood, and polymer materials - covering the majority of deck board products in use today. The sharp point and box thread design help the screw perform across this wide range of materials without requiring frequent bit changes or predrilling in most cases.

What drive bit is required for these screws?

These screws use a T20 6-lobe drive. The 6-lobe interface provides a secure bit fit that reduces cam-out and extends bit life, so a T20 bit is the correct tool for driving these fasteners.

Are these screws appropriate for dock and boardwalk construction in addition to standard deck boards?

Yes. The Deck-Drive DWP Wood screw is specifically designed as a fastening solution for deck, dock, and general exterior applications. The Type 316 stainless steel construction provides the extra corrosion protection needed in wet, high-humidity, and marine environments such as docks and boardwalks.

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