Simpson Deck-Drive DWP Wood Screw in Type 305 Stainless Steel by Simpson is a high-performance fastening solution engineered for decking, dock construction, boardwalks, and general exterior wood applications where reliable corrosion protection is essential. The trim head profile and #7 x 1" sizing make this screw a precise fit for fascia, finishing, millwork, and trim work where a low-profile appearance matters. Built with Type 305 stainless steel, this fastener resists rust and oxidation in outdoor and moisture-exposed environments, delivering long-term holding power in pressure-treated lumber and a wide range of deck board materials.

Key Features

• Type 305 Stainless Steel material - resists corrosion and oxidation in outdoor, moisture-prone, and general exterior applications, extending the service life of the fastener without surface degradation.
• Unique box thread design with raised-ridge technology - greatly reduces driving torque, meaning you can drive more screws on a single battery charge and maintain productivity throughout the job.
• Specially designed sharp point - penetrates hard wood products and engineered deck boards with ease, eliminating the need for pre-drilling in most applications and speeding up installation.
• T15 6-Lobe drive - provides a secure bit fit that reduces cam-out, resulting in easier driving, less bit slippage, and extended bit life across high-volume installs.
• Trim head profile with 0.230 in. head diameter - sits low and discreet on the surface of fascia, trim, and millwork, delivering a clean finished appearance without large fastener heads dominating the surface.
• Compatible with wood, engineered wood, and polymer materials - versatile enough for the majority of deck boards used in modern construction, reducing the need to stock multiple fastener types.

Why This Product

• For exterior deck and dock projects that demand long-lasting corrosion resistance without the premium cost of marine-grade hardware, Type 305 stainless steel delivers durable protection against moisture and outdoor exposure.
• The combination of box threads and a sharp point addresses two common installer frustrations - excessive torque and difficult penetration in hardwoods - so jobs move faster and batteries last longer.
• The trim head design makes this screw the right choice for visible fascia and finish trim work where standard pan or bugle heads would be conspicuous, giving completed projects a clean, professional look.
• The #7 x 1" size and approximate count of 303 per pound make this screw well-suited for trim and fascia fastening tasks where a lightweight, precise fastener is preferred over heavier structural options.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #7
• Length: 1 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.: 303
• Country of Origin: Taiwan

Available Pack Options

• S07100WP1: 1 Lb - includes (1) T15 6-lobe driver bit
• S07100WP5: 5 Lb - includes (1) T15 6-lobe driver bit
• S07100WPB: 5000 Pk - includes (2) T15 6-lobe driver bits

Approved Applications

• Decking, docks, and boardwalks
• Fascia and trim fastening
• Finishing and millwork
• General exterior wood applications requiring corrosion protection
• Wood, engineered wood, and polymer deck board materials

Frequently Asked Questions

What type of stainless steel is this screw made from, and where is it best used?

This screw is made from Type 305 stainless steel, which provides strong corrosion resistance for outdoor, moisture-exposed, and general exterior environments. It is well-suited for decking, docks, boardwalks, fascia, and trim applications. For seaside or coastal environments with high salt exposure, a Type 316 stainless steel option would be a better choice.

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

The Deck-Drive DWP is designed for use with wood, engineered wood, and polymer materials, making it compatible with the majority of deck boards used in today's construction. Its sharp point and box thread design allow it to penetrate hard wood products without the need for pre-drilling in most cases.

What is the purpose of the box thread design on these screws?

The unique box thread design features raised-ridge technology that greatly reduces the driving torque required during installation. This means you can drive more screws per battery charge when using a cordless driver, improving efficiency and reducing fatigue on large decking or trim projects.

Why is a trim head used on this screw instead of a standard bugle or pan head?

The trim head has a smaller 0.230 in. head diameter that sits low and discreet against the surface of the fastened material. This makes the DWP particularly well-suited for visible applications like fascia boards, millwork, and finish trim, where a large fastener head would be aesthetically undesirable.

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