Simpson 16d x 3-1/2" Annular Ring Shank Box Nail in 304 Stainless Steel is a professional-grade fastener engineered for demanding outdoor and structural wood applications where corrosion resistance and long-term holding power are essential. Manufactured by Simpson, this nail combines a full round checkered head with an annular ring shank to deliver superior withdrawal resistance - making it a reliable choice for deck construction, wood framing, permanent wood foundations, and other projects exposed to moisture or corrosive environments.

Key Features

• Type 304 stainless steel construction - provides strong corrosion resistance in outdoor and high-moisture environments, helping fasteners maintain structural integrity over time without rust or staining
• Annular ring shank design - the ringed shank dramatically increases withdrawal resistance compared to smooth-shank nails, locking into wood fibers and keeping connections tight even under load or seasonal wood movement
• Full round head with checkered pattern - the checker pattern blends with natural wood grain, reduces glare from sunlight, and accepts stains or surface finishes for a cleaner finished appearance
• Diamond point tip - penetrates wood cleanly and consistently, reducing splitting and making driving easier in dense lumber
• 16d penny size at 3-1/2" length with 0.131" shank diameter - a standard structural nail size compatible with typical framing and decking applications, ensuring versatility across common construction tasks
• Recommended for permanent wood foundation construction per ANSI/AF&PA Permanent Wood Foundations Design Specifications - gives builders confidence that this fastener meets recognized industry standards for long-term structural use

Why This Product

• Purpose-built for moisture-prone and outdoor environments - Type 304 stainless steel resists corrosion in conditions where standard galvanized or bright nails would degrade, making it a dependable choice for decks, docks, and exterior wood structures
• Superior holding power for structural connections - the annular ring shank bites into wood fibers on installation, providing dramatically greater withdrawal resistance than smooth-shank alternatives - critical in applications where fastener pullout could compromise safety
• Aesthetic compatibility with finished wood surfaces - the checkered head pattern absorbs stain and reduces visible glare, so nails blend into decking or siding rather than standing out as an eyesore
• Meets recognized standards for permanent wood foundations - specifiers and builders working to ANSI/AF&PA Permanent Wood Foundations Design Specifications can use these stainless steel ring shank nails with confidence in compliance-sensitive projects

Specifications

• Brand: Simpson Strong-Tie
• Material / Coating: Type 304 Stainless Steel
• Penny Size: 16d
• Length: 3-1/2 in.
• Shank Diameter: 0.131 in.
• Head Diameter: 2/7 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Gauge: 10
• Approximate Count per Lb.: 67
• Country of Origin: United States

Available Pack Options

• S16ABN1: 1 Lb (67)
• S16ABN5: 5 Lb (335)
• S16ABNB: 25 Lb (1675)

Frequently Asked Questions

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

Type 304 stainless steel offers strong corrosion resistance suitable for most outdoor and above-grade wood construction applications. Type 316 stainless steel provides an additional level of corrosion resistance and is the preferred choice for seaside or coastal applications where exposure to saltwater and highly corrosive environments is expected. For most inland outdoor and permanent wood foundation projects, Type 304 is a reliable and appropriate choice.

Why use an annular ring shank nail instead of a smooth shank nail?

The annular ring shank features a series of rings along the shank that lock into wood fibers as the nail is driven. This greatly increases withdrawal resistance - the force required to pull the nail back out of the wood - compared to a smooth-shank nail of the same length and diameter. This makes ring shank nails especially well-suited for structural connections, decking, and permanent wood foundations where long-term holding power is critical.

Are these nails recommended for use in permanent wood foundation construction?

Yes. Stainless steel annular ring shank nails are specifically recommended for the construction of permanent wood foundations in accordance with the ANSI/AF&PA Permanent Wood Foundations Design Specifications. Using the correct fastener type is an important part of meeting those design standards.

Will the checkered head pattern affect how the nail looks on finished wood surfaces?

The checkered pattern on the head is designed to blend with natural wood grain and reduce glare from sunlight. It also accepts surface finishes and stains, allowing the nail head to better integrate with the appearance of the surrounding wood rather than standing out visually on decking, siding, or other finished surfaces.

Note: Product dimensions may differ from picture. Please see item description for specifications.