Simpson Trim-Head Decking Screw, #8 x 2-1/2", T15 6-Lobe Drive in Type 316 Stainless Steel is engineered for installers who need a clean, low-profile fastening solution on PVC and composite deck surfaces in demanding environments. Type 316 stainless steel construction delivers superior corrosion resistance compared to standard fasteners, making these screws the go-to choice for coastal, marine, and high-moisture applications where ordinary hardware fails prematurely. The trim-style head sits flush and nearly invisible against the decking surface, producing the refined, finished appearance that professionals and homeowners expect from premium deck installations.

Key Features

• Type 316 Stainless Steel material - provides superior corrosion resistance in saltwater, marine, and high-humidity environments, dramatically extending the service life of your deck fastening system
• Trim Head design with 0.230" head diameter - sits low and inconspicuous on the decking surface, delivering a clean, professional finish without the bulky appearance of standard screw heads
• T15 6-Lobe drive system - reduces driver-bit cam-out during installation, making driving faster and easier while extending the usable life of your drive bits
• Type-17 point - provides fast, self-starting penetration so installation moves quickly without the need for pre-drilling in most field conditions (predrilling near board ends is recommended to prevent splitting)
• Coarse threads - draw decking boards and other materials tightly down to the framing for a secure, solid connection that resists loosening over time
• Compatible with most major PVC and composite decking brands - reduces selection guesswork and ensures a reliable, code-appropriate connection for a wide range of popular decking systems

Why This Product

• Built for coastal and marine exposure - Type 316 stainless steel is specifically suited to seaside and high-exposure environments where standard stainless or coated screws may corrode, giving you lasting performance where conditions are harshest
• Delivers a finished, refined look - the trim head design means fasteners are less noticeable on the deck surface, which is essential for composite and PVC decking applications where aesthetics matter as much as function
• Reduces installation fatigue and bit waste - the 6-lobe T15 drive significantly cuts down on cam-out, so installers spend less time fighting stripped bits and more time completing the job efficiently
• Trusted Simpson quality - from a brand known for structural connectors and fastener systems, these screws bring the same engineering focus to trim-head decking applications, giving contractors and builders confidence in every fastener driven

Specifications

• Brand: Simpson Strong-Tie
• Screw Size: #8
• Length: 2-1/2 in.
• Material: Type 316 Stainless Steel
• Finish: Type 316 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.: 126
• Country of Origin: Taiwan

Available Pack Options

• T08250FT1: 1 Lb - includes (1) T15 driver bit included (replacement bit model BIT15T-2-R2)
• T08250FTB: 2000 Pk - includes (2) T15 driver bits included (replacement bit model BIT15T-2-R2)

Frequently Asked Questions

Are these screws suitable for use near saltwater or in marine environments?

Yes. These screws are made from Type 316 stainless steel, which is specifically chosen for its superior corrosion resistance in marine, seaside, and high-exposure environments. Type 316 is the recommended grade for coastal decking applications where standard fasteners would corrode prematurely.

What decking materials are these Trim-Head screws designed to fasten?

These screws are designed for use with PVC and composite decking materials. The trim-style head and Type 316 stainless steel construction are specifically matched to the performance requirements and aesthetics of most major PVC and composite decking brands.

Do I need to pre-drill before installing these screws?

The Type-17 point is designed for fast starts and self-penetrating installation in most situations. However, predrilling is recommended near board ends to prevent splitting, which is a standard best practice when fastening composite or PVC deck boards close to their edges.

What drive bit do I need to install these screws?

These screws require a T15 6-lobe (Torx-style) drive bit. The 6-lobe drive is engineered to minimize cam-out during driving, making installation more efficient and reducing wear on your drive bits compared to Phillips or square-drive alternatives.

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