Simpson Strong-Drive DWP Wood Screw, #14 x 6-inch, Type 316 Stainless Steel Flat Head is a heavy-duty structural fastener engineered by Simpson for demanding exterior applications where corrosion resistance and verified load performance are non-negotiable. Designed for docks, boardwalks, decks near water, and other high-exposure environments, this flat-head wood screw delivers the corrosion protection of Type 316 stainless steel - a marine-grade alloy that withstands saltwater, harsh chemicals, and severe coastal conditions - paired with structural integrity that meets ICC-ES acceptance criteria AC233 for shear, pull-through, and withdrawal resistance.

Key Features

• Type 316 Stainless Steel material - provides superior corrosion resistance in seaside, marine, and high-moisture environments where standard fasteners would degrade prematurely
• ICC-ES AC233 load-rated structural design - tested and rated for shear, pull-through, and withdrawal resistance, giving builders confidence in engineered exterior connections
• Unique box-thread design with raised-ridge technology - greatly reduces driving torque so you can drive more screws on a single battery charge, improving jobsite efficiency
• Specially designed sharp point - penetrates hardwood and dense wood products with ease, reducing the need for pre-drilling and speeding up installation
• T27 6-Lobe drive - provides a secure bit fit that minimizes cam-out, resulting in easier driving and significantly longer bit life
• Flat head profile with 0.460-inch head diameter - sits flush with the surface for a clean, snag-free finish on decking and structural panels
• Compatible with wood, engineered wood, and polymer materials - versatile enough for a wide range of exterior structural connections including deck framing and dock construction

Why This Product

• Built for the harshest corrosion environments - Type 316 stainless steel is the preferred material for seaside and marine installations where chlorides and moisture accelerate rust in lesser fasteners, making this screw the right choice for docks, waterfront decks, and coastal boardwalks
• Load ratings you can document - tested to ICC-ES AC233 for shear, pull-through, and withdrawal, this fastener supports engineered designs where specifiable load data is required by inspectors or structural plans
• Reduces installer fatigue and battery drain - the box-thread geometry dramatically lowers driving torque compared to standard thread patterns, letting crews drive more fasteners per charge on cordless tools
• No sacrificing strength for corrosion resistance - this screw combines the corrosion protection of marine-grade stainless with a structural, load-rated design, eliminating the need to choose between durability and performance in exterior applications

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #14
• Length: 6 in.
• Head Type: Flat Head
• Head Diameter: 0.460 in.
• Drive Type: T27 6-Lobe
• Thread Type: Box Threads
• Point Type: Sharp Point
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Approx. Count Per Lb: 18
• Country of Origin: Taiwan

Available Pack Options

• T14600WP1: 1 Lb (18) - includes (1) T27 6-lobe driver bit
• T14600WP5: 5 Lb (90) - includes (1) T27 6-lobe driver bit
• T14600WPB: 500 Pk - includes (2) T27 6-lobe driver bits

Frequently Asked Questions

What makes Type 316 stainless steel appropriate for marine and waterfront applications?

Type 316 stainless steel contains molybdenum, which significantly improves resistance to chlorides, saltwater, and corrosive chemicals compared to standard stainless grades. Simpson specifically recommends this material for seaside applications, docks, boardwalks, and any installation where exposure to high or severe corrosion is expected.

Is this screw structurally rated, and what testing standards apply?

Yes. The Strong-Drive DWP Wood SS screw has been tested in accordance with ICC-ES acceptance criteria AC233 and is load rated for shear, pull-through, and withdrawal resistance, making it suitable for structural exterior connections that require documented load specifications.

What drive bit is required to install this screw?

This screw uses a T27 6-Lobe drive. The 6-lobe geometry provides a secure bit engagement that minimizes cam-out during driving, extends bit life, and makes installation easier compared to conventional Phillips or square drives.

What materials can this screw be used with?

The Strong-Drive DWP Wood SS is designed for use with wood, engineered wood, and polymer materials. Its sharp point and box-thread design make it effective in hard wood products and exterior structural applications such as decks, docks, and boardwalks.