Simpson #7 x 2-1/4" Trim-Head Decking Screw in Gray 04 with T15 6-Lobe Drive and Type 305 Stainless Steel finish is engineered for PVC and composite deck installations where a clean, low-profile fastener and long-term corrosion resistance are essential. The trim-style head blends with the deck surface for a polished appearance, while the Type 305 stainless steel construction delivers reliable performance in marine and high-exposure outdoor environments. Whether fastening composite deck boards, wood deck boards, or dock and boardwalk surfaces, this screw is purpose-built to stay tight, resist the elements, and keep the finished surface looking its best.

Key Features

• Trim Head design with 0.230" head diameter - sits low and inconspicuously on the decking surface, delivering a clean, finished look that minimizes the visual footprint of each fastener on PVC or composite boards.
• Type 305 Stainless Steel material and finish - provides superior corrosion resistance in marine and high-exposure environments, making it a dependable choice for docks, boardwalks, and coastal or wet-climate deck projects.
• T15 6-Lobe drive - reduces driver-bit cam-out during installation, resulting in easier, more controlled driving and extended bit life on large decking jobs.
• Type-17 point - enables fast, clean starts without pre-drilling through composite or wood deck board materials, saving time and effort during installation.
• Coarse threads - grip approximately 2/3 of the shank, drawing deck boards tightly down to the framing for a secure, gap-free connection.
• Gray 04 painted head - matched to blend with most major PVC and composite decking manufacturers' board colors, so the fastener virtually disappears into the deck surface.
• Available in 13 painted head colors - designed to coordinate with most major PVC and composite decking brands, giving installers flexibility across a wide range of deck board styles.
• Approximately 138 screws per pound - provides a practical reference for estimating the quantity needed for a given project scope without over-ordering.

Why This Product

• Built for marine and high-exposure environments - Type 305 stainless steel resists corrosion where standard steel fasteners would fail, making this screw a reliable choice for docks, boardwalks, and waterfront deck installations.
• Engineered specifically for composite and PVC decking - the trim head profile, coarse thread geometry, and Type-17 point work together to seat cleanly into composite and PVC board surfaces without mushrooming or cracking the material.
• Head color blends with your deck boards - the Gray 04 painted head is part of a 13-color system designed to match most major PVC and composite decking brands, so fasteners stay nearly invisible in the finished deck surface.
• Reduces installer fatigue on production decking work - the 6-lobe drive minimizes cam-out and the Type-17 point starts fast, keeping the installation moving efficiently on large deck, dock, and boardwalk projects.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #7
• Length: 2-1/4 in.
• Head Type: Trim Head
• Head Diameter: 0.230 in.
• Drive Type: T15 6-Lobe
• Thread Type: Coarse Threads
• Point Type: Type-17 Point
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Color: Gray 04
• Approx. Count per Lb.: 138
• Country of Origin: Taiwan

Available Pack Options

• S07225FTPGR04: 350 Pk - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• S07225FTBGR04: 1750 Pk - includes (2) T15 driver bits included (replacement bit model BIT15T-2-R2)

Approved Applications

• Decks - Deck Boards Composite
• Decks - Deck Boards Wood
• Dock and Boardwalk

Frequently Asked Questions

What makes this screw suitable for marine or waterfront deck installations?

This screw is manufactured from Type 305 stainless steel, which provides superior corrosion resistance in marine and high-exposure environments. That makes it appropriate for docks, boardwalks, and outdoor deck installations where fasteners are regularly exposed to moisture, humidity, or salt air.

Will this screw work with both composite and wood deck boards?

Yes. This trim-head screw is approved for use with composite deck boards, wood deck boards, and dock and boardwalk construction. The Type-17 point and coarse thread design help the screw start cleanly and seat securely in both material types.

Why is the head color important for PVC and composite deck installations?

The Gray 04 painted head is designed to blend with the surface color of most major PVC and composite decking manufacturers' boards, minimizing the visual appearance of each fastener. Simpson offers this screw in 13 painted head colors to provide a close match across a wide range of popular decking products.

Should I pre-drill when using this screw near the ends of deck boards?

Pre-drilling is recommended near board ends to prevent splitting. The Type-17 point assists with fast starts in field locations, but pre-drilling near board ends reduces the risk of cracking or splitting the deck board material during installation.

Note: Actual product colors may vary from colors shown on your monitor.