Simpson Deck-Drive DWP Wood Screw in Type 316 Stainless Steel is a high-performance fastening solution engineered for deck boards, docks, boardwalks, fascia, and general exterior applications where superior corrosion resistance is critical. Built with a trim head profile, sharp point, and unique box threads, this #7 x 3" screw from Simpson drives cleanly into a wide range of wood and engineered wood materials - making it a trusted choice for coastal, seaside, and high-moisture environments where standard fasteners fall short.

Key Features

• Type 316 Stainless Steel construction - provides exceptional resistance to salt spray, moisture, and harsh outdoor conditions, making it ideal for coastal and waterfront installations.
• Unique box thread design with raised-ridge technology - greatly reduces driving torque so you can drive more screws on a single battery charge, improving efficiency and reducing fatigue.
• Specially designed sharp point - penetrates hardwood products with ease, minimizing pre-drilling requirements and speeding up installation across a variety of wood species.
• T15 6-Lobe drive - delivers a secure bit fit that results in easier driving, reduced cam-out, and extended bit life compared to standard drive types.
• Trim head profile (0.230" head diameter) - sits low and discreet on the surface, providing a clean finished appearance on decking, fascia, and millwork applications.
• Compatible with wood, engineered wood, and polymer materials - offers versatility across the full range of modern decking and exterior trim products.

Why This Product

• Built for coastal and seaside environments - Type 316 stainless steel offers a higher grade of corrosion protection than standard stainless steel, making this screw the right choice where saltwater exposure and humidity can degrade lesser fasteners over time.
• Reduces battery drain and wrist fatigue - the box thread design with raised-ridge technology lowers driving resistance, so contractors and DIYers can complete larger jobs on a single charge with less physical effort.
• Clean, low-profile finish on visible surfaces - the trim head keeps a discreet footprint, making it especially well-suited for fascia boards, trim, and any application where fastener appearance matters.
• Engineered for today's deck board materials - the sharp-point tip and box thread geometry are specifically designed to work with the wide range of hardwoods, engineered wood, and polymer decking products commonly used in modern construction.

Specifications

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

Available Pack Options

• T07300FWP: 60 Pk - includes (1) T15 6-lobe driver bit
• T07300WP1: 1 Lb - includes (1) T15 6-lobe driver bit
• T07300WPP: 350 Pk - includes (1) T15 6-lobe driver bit
• T07300WP5: 5 Lb - includes (1) T15 6-lobe driver bit
• T07300WPB: 1750 Pk - includes (2) T15 6-lobe driver bits

Approved Applications

• Decking, docks, and boardwalks
• Fascia, finishing, millwork, and trim
• General exterior applications requiring extra corrosion protection
• Coastal and seaside construction environments
• Wood, engineered wood, and polymer decking materials

Frequently Asked Questions

Why is Type 316 stainless steel recommended for outdoor and coastal applications?

Type 316 stainless steel contains added molybdenum, which provides enhanced resistance to salt, moisture, and corrosive outdoor environments compared to lower grades of stainless steel. This makes it particularly well-suited for decks, docks, and boardwalks in seaside or high-humidity locations where fastener degradation is a common concern.

What is the advantage of the box thread design on the DWP screw?

The unique box thread design features raised-ridge technology that significantly reduces the torque needed to drive each screw. This means less strain on your drill's battery and less effort for the installer - an important benefit when fastening a full deck or dock project with hundreds of screws.

What materials can this screw be used with?

The Deck-Drive DWP Wood SS screw is designed for use with wood, engineered wood, and polymer materials. The sharp-point tip and box thread geometry are specifically suited to the range of hardwoods and composite materials commonly found in modern deck boards, fascia, and trim applications.

What drive bit does the T15 6-Lobe drive require?

The T15 6-Lobe drive requires a T15 Torx-style bit. The 6-lobe geometry provides a secure, snug fit between the bit and screw head, which reduces cam-out during driving and extends bit life - especially important during high-volume deck or dock installations.

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