Simpson Deck-Drive DWP Wood Screw in Type 305 Stainless Steel is a high-performance exterior fastener engineered for decking, dock construction, boardwalks, and general outdoor wood applications where reliable corrosion resistance is essential. The trim head profile and T15 6-lobe drive make this screw ideal for fastening fascia, millwork, and finish trim work where a low-profile appearance matters. Sized at #7 x 3", this stainless steel wood screw delivers the holding power and weather resistance needed to stand up to demanding outdoor conditions over the long term.

Key Features

• Type 305 Stainless Steel material - provides strong corrosion protection for exterior applications including decks, docks, and outdoor wood structures exposed to moisture and the elements.
• Unique box-thread design with raised-ridge technology - greatly reduces driving torque so you can drive more screws per battery charge, improving productivity on large decking projects.
• Specially designed sharp point - penetrates hardwood and engineered wood products with ease, reducing the need for pre-drilling and saving time on the job.
• T15 6-lobe drive - delivers a secure bit-to-fastener fit that results in easier driving and extended bit life, reducing bit slippage and cam-out.
• Trim head profile with 0.230 in. head diameter - sits close to the wood surface for a clean, finished look on fascia, trim, and millwork applications.
• Compatible with wood, engineered wood, and polymer materials - offers versatility across the wide range of deck board and trim products commonly used in today's construction.
• 3 in. length at #7 screw size - provides solid penetration depth suitable for typical deck board and fascia fastening without over-driving.

Why This Product

• Designed specifically for deck, dock, and exterior wood applications where corrosion resistance is a priority - the Type 305 stainless steel finish holds up in wet and outdoor environments that would quickly degrade standard fasteners.
• The combination of box threads and a sharp point makes driving into today's dense deck boards noticeably easier, helping reduce fatigue and battery drain during high-volume installations.
• The low-profile trim head keeps the screw discreet on fascia, millwork, and finishing applications - a practical choice when appearance of the finished surface matters as much as fastener strength.
• Offered by Simpson - a brand well known in structural and exterior fastening - giving contractors and builders confidence in consistent quality and performance for outdoor wood construction.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #7
• Length: 3 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.: 98
• Country of Origin: Taiwan

Available Pack Options

• S07300WP1: 1 Lb - includes (1) T15 6-lobe driver bit
• S07300WPP: 350 Pk - includes (1) T15 6-lobe driver bit
• S07300WP5: 5 Lb - includes (1) T15 6-lobe driver bit
• S07300WPB: 1750 Pk - includes (2) T15 6-lobe driver bits

Approved Applications

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

Frequently Asked Questions

What type of material is this screw compatible with?

This screw is designed for use with wood, engineered wood, and polymer materials - making it suitable for the wide variety of deck boards, fascia panels, and trim products used in modern exterior construction.

Why does the box-thread design matter for decking installations?

The unique box-thread design with raised-ridge technology greatly reduces driving torque compared to conventional thread profiles. This means you can drive more screws on a single battery charge, which is a significant advantage during large deck or dock installations.

Is Type 305 stainless steel appropriate for coastal or seaside environments?

Type 305 stainless steel provides solid corrosion resistance for general exterior, deck, and dock applications. For seaside and coastal environments with elevated salt exposure, a Type 316 stainless steel version is recommended instead.

What drive bit is required for this screw?

This screw uses a T15 6-lobe drive. The 6-lobe design provides a secure fit between the bit and the fastener, making driving easier and extending bit life by reducing cam-out during installation.

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