Simpson Deck-Drive DWP Wood Screw in Type 316 Stainless Steel by Simpson is a high-performance fastener engineered for deck, dock, boardwalk, and general exterior wood applications where superior corrosion resistance is a must. The #7 x 2-1/4" trim head screw features a T15 6-lobe drive, a specially designed sharp point, and unique box threads - making it an ideal choice for professionals and DIYers working with standard wood, engineered wood, and polymer decking materials. Type 316 stainless steel construction provides the elevated resistance to salt spray and moisture that seaside and coastal environments demand, ensuring long-lasting performance in the harshest outdoor conditions.

Key Features

• Type 316 Stainless Steel material - delivers outstanding resistance to saltwater, chlorides, and coastal moisture, making this fastener well-suited for seaside docks, boardwalks, and exposed exterior structures where standard stainless steel may fall short.
• Unique box thread design with raised-ridge technology - greatly reduces driving torque so you can drive more screws on a single battery charge, increasing efficiency on large decking projects.
• Specially designed sharp point - penetrates hard wood products and dense decking materials with ease, reducing the need for pre-drilling and speeding up installation.
• T15 6-lobe drive - provides a secure bit-to-fastener fit that results in clean, easy driving and extended bit life, minimizing cam-out and reducing tool wear over long runs.
• Trim head style with 0.230 in. head diameter - sits low and discreet on the wood surface, creating a clean, finished appearance ideal for fascia boards, trim, and exposed decking faces.
• Compatible with wood, engineered wood, and polymer materials - offers versatile use across the wide range of deck board types common in today's construction and renovation projects.

Why This Product

• Built specifically for coastal and waterfront environments - Type 316 stainless steel provides a higher level of corrosion protection than standard 304 stainless, making this screw the right call for docks, piers, and seaside decks exposed to salt air and standing moisture.
• Reduces installer fatigue and extends battery runtime - the box thread design with raised-ridge technology lowers driving torque significantly, which translates to more screws per charge and less strain during high-volume deck installations.
• Delivers a clean, professional finish - the trim head profile keeps fasteners low-profile and unobtrusive on fascia, millwork, and exposed deck boards, eliminating the need for additional finishing steps.
• Versatile across today's decking materials - the sharp-point tip and box threads are optimized for the broad range of wood, engineered wood, and polymer deck boards in use today, reducing the need to stock multiple screw types for a single project.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #7
• Length: 2-1/4 in.
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Head Type: Trim Head
• Head Diameter: 0.230 in.
• Drive Type: T15 6-Lobe
• Thread Type: Box Threads
• Point Type: Sharp Point
• Approximate Count per Lb.: 138
• Color: None
• Country of Origin: Taiwan

Available Pack Options

• T07225WP-RP15: 15 Pk
• T07225FWP: 86 Pk - includes (1) T15 6-lobe driver bit
• T07225WP1: 1 Lb - includes (1) T15 6-lobe driver bit
• T07225WP-RP340: 340 Pk - includes (1) T15 6-lobe bit included
• T07225WPP: 350 Pk - includes (1) T15 6-lobe driver bit
• T07225WP5: 5 Lb - includes (1) T15 6-lobe driver bit
• T07225WPB: 1750 Pk - includes (2) T15 6-lobe driver bits

Approved Applications

• Deck boards and decking surfaces
• Docks and boardwalks
• Fascia and trim installation
• Finishing and millwork
• General exterior wood applications requiring extra corrosion protection

Frequently Asked Questions

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

Type 316 stainless steel contains molybdenum, which provides an elevated level of resistance to chlorides, salt spray, and moisture compared to standard stainless alloys. This makes the DWP Wood SS screw particularly well-suited for seaside, coastal, and waterfront applications such as docks and boardwalks where ordinary fasteners may corrode prematurely.

What does the box thread design actually do for installation?

The unique box thread design incorporates raised-ridge technology that greatly reduces the driving torque required to seat the screw. In practical terms, this means less resistance during driving, which allows you to complete more fasteners on a single battery charge and reduces physical fatigue during extended deck installations.

What materials can these screws be used with?

The Deck-Drive DWP Wood SS screw is compatible with wood, engineered wood, and polymer materials - covering the broad range of deck board products commonly used today. The specially designed sharp point penetrates hard wood products with ease, minimizing the need for pre-drilling.

What bit is needed to drive these screws?

These screws use a T15 6-lobe drive, so a T15 Torx-compatible bit is required for installation. The 6-lobe interface provides a secure bit-to-fastener fit that helps prevent cam-out and extends bit life over long runs.

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