Simpson 16d Preservative-Treated Wood Decking Nail in Type 304 Stainless Steel by Simpson Strong-Tie is a heavy-duty exterior fastener engineered for deck and dock construction where long-term corrosion resistance and holding strength are essential. With a 0.162-inch shank diameter and 3-1/2-inch length, this 16d nail drives cleanly into both green and seasoned preservative-treated pine, delivering a secure, lasting connection in outdoor living applications where moisture and treated lumber chemicals would compromise lesser fasteners.

Key Features

• Type 304 Stainless Steel material - provides powerful corrosion resistance in outdoor and preservative-treated lumber environments, helping fastened structures last as long as the surrounding framing
• Annular-ring shank - increases withdrawal resistance so nail heads are less likely to pop up over time, maintaining a clean, flush deck surface season after season
• 0.162-inch shank diameter (Gauge 8) - larger cross-section easily penetrates both green and seasoned preservative-treated pine without pre-drilling, speeding up installation
• Full round head with checkered pattern - the textured 11/32-inch head blends with wood grain and reduces glare from sunlight, giving the finished deck a cleaner, more professional appearance
• Diamond point tip - self-starting geometry reduces splitting in preservative-treated lumber and makes driving faster and more accurate
• 16d penny size, 3-1/2-inch length - sized specifically for standard decking boards, providing adequate penetration depth for a structurally sound connection
• Made in the United States - domestic production supports consistent quality standards for a critical structural fastener

Why This Product

• Purpose-built for deck and dock projects where preservative-treated lumber and constant moisture exposure demand a fastener that resists corrosion without sacrificing holding power - the Type 304 stainless steel construction addresses exactly that challenge
• The annular-ring shank design solves one of the most common deck maintenance problems: nail pops. By locking into the wood fibers with mechanical grip, this nail stays flush longer than smooth-shank alternatives
• The larger-than-standard 0.162-inch shank diameter is specifically suited to the denser fiber structure of pressure-treated pine, reducing drive resistance and installer fatigue across large decking projects
• For projects near salt air or highly corrosive environments, Simpson also offers a Type 316 stainless steel version - making it easy to select the right corrosion protection level for the specific job site conditions

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 16d
• Length: 3-1/2 in.
• Shank Diameter: 0.162 in.
• Shank Type: Annular-Ring Shank
• Gauge: 8
• Head Type: Full Round Head
• Head Diameter: 11/32 in.
• Head Pattern: Checkered
• Point Type: Diamond Point
• Material/Finish: Type 304 Stainless Steel
• Approx. Count per Lb: 44
• Country of Origin: United States

Available Pack Options

• S16HPTD1: 1 Lb (44)
• S16HPTD5: 5 Lb (220)
• S16HPTDB: 25 Lb (1100)

Approved Applications

• Deck construction with preservative-treated pine decking boards
• Dock construction in freshwater and outdoor moisture-exposed environments
• Exterior fastening into green or seasoned preservative-treated lumber
• Outdoor living spaces requiring long-term corrosion-resistant fastening

Frequently Asked Questions

Can this nail be used in both green and seasoned preservative-treated pine?

Yes. The 0.162-inch shank diameter is specifically designed to allow easy installation into both green (freshly treated, higher moisture content) and seasoned (dried) preservative-treated pine, reducing the need for pre-drilling in either condition.

What is the difference between Type 304 and Type 316 stainless steel for decking nails?

Type 304 stainless steel provides strong corrosion resistance suitable for most outdoor deck and dock applications. For seaside or coastal environments where salt air and saltwater exposure are factors, Type 316 stainless steel offers superior corrosion resistance and is the recommended choice for those more demanding conditions.

Why does the annular-ring shank matter for deck fasteners?

The annular-ring shank creates mechanical interlocking with the wood fibers, significantly increasing withdrawal resistance compared to smooth-shank nails. In decking applications subject to seasonal wood movement, this translates to nail heads remaining flush over time rather than gradually working loose and popping above the deck surface.

What does the checkered head pattern on this nail do?

The checkered pattern on the 11/32-inch full round head serves two practical purposes: it visually blends with the natural wood grain of decking boards for a cleaner finished look, and it reduces glare from sunlight off the nail head surface - both benefits particularly noticeable on exposed outdoor deck surfaces.

Note: Product dimensions may differ from picture.