Simpson #7 x 1-5/8" Trim-Head Screw with T15 6-Lobe Drive in Type 305 Stainless Steel is engineered for clean, professional fastening of PVC and composite decking in marine, coastal, and high-moisture environments. The low-profile trim-style head virtually disappears into the decking surface, while the Type 305 stainless steel construction delivers superior corrosion resistance where standard fasteners would fail. Whether you are installing a waterfront deck, a poolside platform, or any exterior composite decking application that demands long-term durability, this fastener is built to hold tight and look great for years.

Key Features

• Type 305 Stainless Steel construction - provides superior corrosion resistance in marine, high-exposure, and wet outdoor environments where standard carbon-steel screws would rust and stain decking surfaces.
• Trim Head design with a 0.230" head diameter - the narrow, low-profile head sits flush and discreet on the decking surface, delivering a clean finished appearance without visible hardware bulk.
• T15 6-Lobe drive system - reduces driver-bit cam-out during installation, resulting in faster, easier driving and extended bit life, which saves time and reduces frustration on large deck projects.
• Type-17 point - bores into composite and PVC decking materials quickly for fast, accurate starts without pre-drilling in most field conditions.
• Coarse thread pattern - pulls decking boards and other material tight against the framing for a secure, rattle-free connection that stays firm over repeated thermal expansion and contraction cycles.
• #7 screw size at 1-5/8" length - sized appropriately for PVC and composite deck board thickness, providing confident holding power without over-penetrating thin framing members.

Why This Product

• Purpose-built for corrosive environments - Type 305 stainless steel is specifically recommended for marine and high-exposure settings where PVC or composite decks are installed, making this screw the right material choice rather than a compromise.
• Cleaner deck appearance - the trim head's special design minimizes the visible hardware footprint on the decking surface, giving composite and PVC installations a more polished, finished look compared to standard bugle-head screws.
• Painted head options available in 13 colors - Simpson offers matching painted-head versions designed to blend with most major PVC and composite decking manufacturers, allowing virtually seamless color coordination across the deck surface.
• Driving efficiency on the job site - the 6-lobe T15 drive prevents cam-out and the Type-17 point ensures fast engagement, reducing driver wear and keeping installation moving at pace on large-square-footage deck projects.

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #7
• Length: 1-5/8 in.
• Material: Type 305 Stainless Steel
• Finish: Type 305 Stainless Steel
• Head Type: Trim Head
• Head Diameter: 0.230 in.
• Drive Type: T15 6-Lobe
• Thread Type: Coarse Threads
• Point Type: Type-17 Point
• Color: None
• Approximate Count Per Lb.: 195
• Country of Origin: Taiwan

Available Pack Options

• S07162FT1: 1 Lb - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• S07162FT5: 5 Lb - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• S07162FTB: 4000 Pk - includes (2) T15 driver bits included (replacement bit model BIT15T-2-R2)

Frequently Asked Questions

What types of decking is this screw designed for?

This trim-head screw is designed for use with PVC and composite decking installations, particularly in marine or high-exposure environments where corrosion resistance is critical. The Type 305 stainless steel material is specifically suited to these demanding outdoor applications.

Do I need to pre-drill before driving these screws near board ends?

Pre-drilling is recommended near board ends to prevent splitting. The Type-17 point assists with fast starts in most field conditions, but taking the extra step of pre-drilling near edges helps protect composite and PVC board ends from cracking.

What driver bit does this screw require?

This screw uses a T15 6-Lobe drive, which requires a T15 6-lobe (Torx-style) driver bit. The 6-lobe design reduces cam-out compared to Phillips or square drive bits, extending bit life and making the driving process more efficient.

Is this screw available with a painted head to match my decking color?

Simpson's Trim-Head screw line is available with painted heads in 13 colors matched to blend with most major PVC and composite decking manufacturers. The specific variant listed here has no painted color (Color: None), but color-matched options exist within the same product family.

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