Simpson #7 x 2-1/4" Trim-Head Decking Screw in Type 316 Stainless Steel with T15 6-Lobe Drive is engineered for use in marine, coastal, and high-exposure outdoor environments where superior corrosion resistance is critical. Designed by Simpson for PVC and composite deck installations, these trim-head fasteners deliver a clean, low-profile finish while providing the holding strength and weather resistance that demanding applications require. The Gray 01 painted head blends seamlessly with decking surfaces, making these screws a practical choice for installers who want both performance and a polished final appearance.

Key Features

• Type 316 Stainless Steel material - offers superior corrosion resistance in saltwater, marine, and high-moisture environments where standard fasteners would fail prematurely.
• Trim Head design with 0.230" head diameter - sits close to the decking surface for a clean, less noticeable finish that keeps the focus on the deck, not the fasteners.
• T15 6-Lobe drive - reduces driver-bit cam-out during installation, resulting in easier driving, less fatigue for the installer, and longer bit life over the course of a project.
• Type-17 Point - enables fast, self-starting penetration into composite and PVC decking materials without the need for pre-drilling in most applications, speeding up installation time.
• Coarse threads - draw the decking board tightly to the framing for a secure, rigid connection that minimizes movement and squeaking over time.
• Gray 01 painted head - color-matched to blend with popular PVC and composite decking products, giving the finished deck a uniform, professional appearance without visible fastener contrast.
• 2-1/4" length (#7 screw size) - provides sufficient thread engagement into framing for a reliable hold in standard composite and PVC deck board installations.

Why This Product

• Built for coastal and marine environments - Type 316 stainless steel is specifically recommended for seaside and high-exposure applications where saltwater spray and humidity accelerate the corrosion of standard stainless or coated fasteners.
• Designed to disappear into your deck - the trim-head profile and Gray 01 color-matched painted finish are engineered to blend with major PVC and composite decking brands, delivering a cleaner result than standard bugle-head screws.
• Reduces installer frustration - the combination of the T15 6-Lobe drive and Type-17 point means less cam-out, faster starts, and smoother driving from the first screw to the last board.
• Dependable holding power for composite decks - coarse threads grip the framing firmly, keeping boards snug and reducing the risk of loosening, warping, or surface separation over time.

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 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Color: Gray 01
• Approx. Count per Lb.: 138
• Country of Origin: Taiwan

Available Pack Options

• T07225FT70GR01: 70 Pk - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• T07225FTPGR01: 350 Pk - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• T07225FTBGR01: 1750 Pk - includes (2) T15 driver bits included (replacement bit model BIT15T-2-R2)

Frequently Asked Questions

What type of decking is this screw intended for?

This trim-head screw is designed for use with PVC and composite deck boards. The trim-head profile and color-matched Gray 01 painted head are specifically engineered to blend with most major PVC and composite decking manufacturers for a clean, finished look.

Why is Type 316 stainless steel recommended for this application?

Type 316 stainless steel provides superior corrosion resistance compared to standard grades, making it the recommended choice for marine, coastal, and other high-exposure environments where moisture, salt air, and harsh outdoor conditions are present. It is specifically suited for seaside deck installations.

What is the benefit of the T15 6-Lobe drive over a standard Phillips drive?

The T15 6-Lobe drive design significantly reduces driver-bit cam-out during installation. This means the bit stays engaged with the screw head more reliably, making driving easier, reducing installer effort, and extending the usable life of the driver bit across a full installation.

Should I pre-drill near board ends when using these screws?

Yes, pre-drilling is recommended near board ends to prevent splitting of the decking material. While the Type-17 point allows for fast starts in most field applications, pre-drilling near the ends of PVC and composite boards helps ensure a clean, split-free result.

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