Simpson Deck-Drive DWP Wood Screw in #8 x 2-1/2" with Type 305 Stainless Steel finish is a purpose-built exterior fastener from Simpson designed for decking, dock construction, and general outdoor wood applications where reliable corrosion protection is essential. Featuring a sharp point and box thread design, this trim head screw drives cleanly into a wide range of deck board materials without splitting, making it a go-to choice for professional installers and contractors working in demanding outdoor environments. The T20 6-lobe drive system ensures a secure bit engagement, reducing cam-out and extending bit life on the job site.

Key Features

• Type 305 Stainless Steel material - delivers superior corrosion resistance for exterior and marine-adjacent applications where moisture, humidity, and outdoor exposure are ongoing concerns, keeping fasteners secure without rust staining.
• Unique box thread design - reduces driving torque compared to conventional threads, allowing more screws per battery charge and less fatigue during extended installation sessions.
• Specially designed sharp point - penetrates hardwoods and dense deck board materials with ease, eliminating the need for pre-drilling in most applications and speeding up installation.
• Trim head profile (0.250 in. head diameter) - sits low and discreetly on the surface for a clean, finished appearance on fascia boards, trim, and visible deck faces where aesthetics matter.
• T20 6-lobe drive type - provides a snug, positive bit engagement that reduces slippage, protects the fastener head finish, and extends the working life of your drive bits.
• #8 x 2-1/2" size - suited for fastening standard deck boards, fascia, and trim, providing solid holding power without overdriving into thinner materials.

Why This Product

• For deck and dock projects exposed to rain, humidity, and outdoor conditions, the Type 305 Stainless Steel construction provides long-lasting corrosion protection that helps maintain structural integrity and a clean appearance over years of service.
• The combination of box threads and a sharp point means faster, easier driving into today's engineered and natural wood deck boards - reducing battery drain and saving time when driving high volumes of fasteners.
• The trim head design keeps fastener heads low-profile and unobtrusive, making this screw an ideal choice for visible applications like deck fascia, millwork, and exterior trim where appearance is just as important as performance.
• Versatility across wood, engineered wood, and polymer materials means this single screw covers a wide range of exterior applications - from traditional hardwood decking to composite and polymer board installations.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 2-1/2 in.
• Head Type: Trim Head
• Head Diameter: 0.250 in.
• 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.: 109
• Country of Origin: Taiwan

Available Pack Options

• S08250WPP: 350 Pk - includes (1) T20 6-lobe driver bit
• S08250WPB: 1750 Pk - includes (2) T20 6-lobe driver bits

Approved Applications

• Deck boards and decking surfaces
• Docks and boardwalks
• General exterior wood construction
• Fascia and trim installation
• Finishing and millwork
• Engineered wood and polymer materials

Frequently Asked Questions

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

The DWP Wood Screw is suited for use with wood, engineered wood, and polymer materials, making it a flexible choice for a wide range of exterior decking, dock, and trim applications.

Why does this screw use a box thread design instead of a standard thread?

The unique box thread design with raised-ridge technology is engineered to greatly reduce driving torque compared to conventional thread profiles. This allows installers to drive more screws per battery charge, improving productivity and reducing fatigue on the job site.

Is Type 305 Stainless Steel suitable for coastal or seaside environments?

Type 305 Stainless Steel provides strong corrosion resistance for most outdoor, deck, and dock environments. For seaside and coastal locations with high salt exposure, a Type 316 stainless steel option is recommended for enhanced performance in those conditions.

What drive bit is required for the DWP Wood Screw?

This screw uses a T20 6-lobe drive, which requires a T20 Torx-compatible bit. The 6-lobe design provides a secure bit-to-fastener fit that reduces cam-out and extends bit life during high-volume driving applications.

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