Simpson Trim-Head Screw #7 x 2-1/4 in. 6-Lobe Drive T15 Type 316 Stainless 3000-Pack is built for decking installations where corrosion protection and a clean surface finish are non-negotiable. Manufactured from Type 316 stainless steel, these trim-head fasteners are engineered for marine and high-exposure environments - including docks, boardwalks, and seaside deck projects where standard screws fail prematurely. The low-profile head blends discreetly into PVC and composite decking surfaces, while purpose-built thread geometry and a Type-17 point make installation fast and reliable across large-scale projects.

Key Features

• Type 316 stainless steel construction - provides maximum corrosion protection in marine, saltwater, and high-moisture environments where lesser fasteners would corrode and fail
• Trim-style head - sits low and inconspicuously on the decking surface, delivering a cleaner, more finished appearance on PVC and composite deck projects
• Type-17 point - cuts into material quickly for fast starts, reducing installation time and effort across large decking jobs
• Coarse threads on approximately 2/3 of the shank - draws decking and other material tightly and securely to the framing for a firm, lasting connection
• 6-lobe T15 drive - resists driver-bit cam-out during installation, making driving easier and extending bit life, which matters on high-volume projects
• Two T15 driver bits included - lets you start the job immediately without sourcing additional tooling; replacement bits are available under model BIT15T-2-R2
• Predrilling recommended near board ends - taking this extra step helps prevent splitting and protects the integrity of your decking material at vulnerable points
• Approved for wood decking and select composite decking materials - versatile enough for a range of common deck board substrates used in residential and commercial applications

Why This Product

• Engineered specifically for demanding outdoor environments - Type 316 stainless steel goes beyond basic corrosion resistance, making these screws a dependable choice for docks, boardwalks, and coastal decking where exposure to salt and moisture is constant
• A cleaner deck surface with no compromise on holding power - the trim-style head minimizes visual impact on the finished deck while coarse threads along two-thirds of the shank lock decking boards firmly to the framing below
• Designed to keep installation moving efficiently - the combination of a Type-17 point for fast starts and a 6-lobe drive that resists cam-out means fewer interruptions, less driver-bit replacement, and more consistent results on large projects
• A complete, job-ready package for high-volume decking work - the 3,000-count bulk pack paired with two included T15 driver bits means you have the fasteners and tooling to tackle serious decking installations from the first screw to the last

Specifications

• MPN: T07225FTB
• 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
• Quantity: 3,000

Approved Applications

• Dock and Boardwalk

What's Included

• (2) T15 driver bits included (replacement bit model BIT15T-2-R2)

Frequently Asked Questions

Why should I choose Type 316 stainless steel screws for my decking project?

Type 316 stainless steel provides maximum corrosion protection, making these screws ideal for marine or high-exposure environments such as seaside installations, docks, and boardwalks where standard fasteners would corrode prematurely.

What does the 6-lobe drive offer compared to standard drive types?

The 6-lobe drive helps prevent driver-bit cam-out, resulting in easier driving and longer bit life - which is especially valuable on large projects where thousands of screws are being installed.

Is predrilling required when installing these trim-head screws?

Predrilling is recommended near board ends to prevent splitting. The Type-17 point supports fast starts in the field, but taking the extra step near board ends helps protect the integrity of your decking material.

Are driver bits included with this 3,000-count pack?

Yes. This pack includes (2) T15 driver bits. If replacement bits are needed, the compatible replacement bit model is BIT15T-2-R2.

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