Simpson #7 x 2-1/4" Trim-Head Screw with T15 6-Lobe Drive in Type 305 Stainless Steel is engineered for clean, professional deck installations on PVC and composite decking surfaces in marine and high-exposure environments. The low-profile trim head sits flush and inconspicuously against the decking surface, while the Type 305 stainless steel construction delivers superior corrosion resistance where ordinary fasteners would fail. Whether you are fastening composite boards in a coastal setting or installing PVC decking in a high-moisture area, these stainless steel trim-head screws combine a refined appearance with the durability demanded by demanding outdoor applications.

Key Features

• Trim Head Design (0.230" head diameter) - the small, low-profile head sits flush and blends into the decking surface for a clean, finished appearance with minimal visual interruption
• Type 305 Stainless Steel Material and Finish - provides superior corrosion resistance in marine environments, high-humidity conditions, and other high-exposure outdoor applications where standard fasteners degrade prematurely
• T15 6-Lobe Drive - resists driver-bit cam-out during installation, resulting in easier, more controlled driving and extended bit life compared to Phillips or slotted drives
• Type-17 Point - the aggressive, self-starting point bores into composite and PVC decking quickly without requiring pre-drilling in most field conditions, reducing installation time
• Coarse Thread Pattern - draws the decking material tightly down to the framing for a secure, gap-free connection that minimizes board movement and squeaking over time
• #7 x 2-1/4" Size - appropriately sized for typical composite and PVC deck board thickness, delivering adequate penetration into the framing below for a secure hold

Why This Product

• Purpose-built for PVC and composite decking in harsh environments - Type 305 stainless steel resists the accelerated corrosion that occurs in marine and high-moisture settings where galvanized or coated fasteners often fail, protecting the deck's structural integrity and appearance over time
• Delivers a cleaner finished look than standard decking screws - the trim head's reduced diameter minimizes the visible fastener footprint on the deck surface, which matters most when appearance is a priority on composite or PVC installations
• Reduces installation fatigue and bit wear - the 6-lobe T15 drive system transfers torque efficiently and prevents the cam-out frustration common with Phillips-head fasteners, keeping crews working faster and longer without changing bits
• Engineered by Simpson for reliable performance - the combination of Type-17 point, coarse threads, and trim head geometry reflects a fastener designed specifically for the demands of composite and PVC deck construction rather than a general-purpose screw adapted for the task

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: None
• Approx. Count Per Lb.: 138
• Country of Origin: Taiwan

Available Pack Options

• S07225FT1: 1 Lb - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• S07225FT5: 5 Lb - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• S07225FTB: 3000 Pk - includes (2) T15 driver bits included (replacement bit model BIT15T-2-R2)

Frequently Asked Questions

What types of decking are these trim-head screws designed for?

These screws are specifically designed for use with PVC and composite decking installations. The trim head provides a clean, low-profile finish that complements the smooth surface typical of composite and PVC deck boards, and the Type 305 stainless steel construction handles the high-exposure or marine environments where these materials are often installed.

Why choose Type 305 stainless steel for deck fasteners?

Type 305 stainless steel offers superior corrosion resistance compared to standard coated or galvanized fasteners, making it well-suited for marine environments, coastal locations, and other high-exposure outdoor settings. This material helps prevent the rust streaking and fastener degradation that can compromise both the appearance and structural performance of a deck over time.

What is a Type-17 point and why does it matter?

The Type-17 point is an aggressive, self-starting point design that allows the screw to bore into composite and PVC decking materials efficiently. It helps initiate the fastening process quickly and cleanly, reducing the need for pre-drilling in many applications and speeding up overall installation.

Is pre-drilling required when using these screws?

Pre-drilling is recommended near board ends to help prevent splitting, even though the Type-17 point is designed for fast starts in field conditions. Taking this precaution near the ends of composite or PVC boards helps maintain a clean, professional installation and avoids damage to the decking material at its most vulnerable points.

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