Simpson 3-1/2" 16d Annular Ring Shank Common Nail in Type 304 Stainless Steel delivers corrosion-resistant fastening performance for wood framing and structural wood-to-wood connections. Engineered by Simpson Strong-Tie, this 8-gauge stainless steel nail features an annular ring shank that dramatically increases withdrawal resistance compared to smooth-shank alternatives - keeping fasteners firmly in place under load, movement, and moisture exposure. Built for exterior and demanding environments where rust and corrosion can compromise long-term structural integrity, this common nail is an ideal choice for decking, framing, and outdoor wood construction projects where lasting hold is essential.

Key Features

• Annular ring shank design - increases withdrawal resistance compared to smooth shanks, providing a more secure grip in wood-to-wood framing and reducing the risk of nail backing out over time
• Type 304 stainless steel material - delivers strong corrosion resistance for exterior applications and pressure-treated lumber environments where standard nails would corrode prematurely
• 8-gauge, 0.162" shank diameter - provides substantial holding strength suitable for structural wood framing tasks and heavy-duty fastening applications
• Full round head (11/32" diameter) - maximizes bearing surface against wood for a secure, flush-driving connection and reduces the chance of pull-through in framing applications
• Diamond point tip - enables cleaner, more controlled penetration into wood fibers, reducing splitting and making driving easier across a range of lumber types
• 3-1/2" length (16d penny size) - sized for common framing tasks including dimensional lumber connections where deeper penetration and grip are required
• Made in the United States - manufactured domestically to consistent quality standards expected in professional construction applications

Why This Product

• Built to resist corrosion in exterior and wet environments - Type 304 stainless steel construction means these nails won't rust out in outdoor framing, exposed structures, or applications involving moisture-laden or treated lumber, protecting the integrity of your build over the long term
• Annular ring shank solves the problem of nail withdrawal - in framing applications where wood can expand, contract, or shift seasonally, the ring shank profile grips the wood fibers and resists backing out - a common failure point with smooth-shank nails
• Trusted Simpson Strong-Tie engineering for structural fastening - Simpson Strong-Tie is a recognized name in structural connectors and fasteners, and this nail is designed to meet the demands of serious wood framing and exterior construction projects
• 16d sizing with full round head makes these a standard choice for dimensional framing - the 3-1/2" length and full round head profile align with common framing requirements, making these nails a reliable fit for wood-to-wood connections in structural applications

Specifications

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

Available Pack Options

• S16ACN1: 1 Lb (44)
• S16ACN5: 5 Lb (220)
• S16ACNB: 25 Lb (1100)

Approved Applications

• Fastening Wood-to-Wood
• Framing - Wood

Frequently Asked Questions

What makes an annular ring shank nail different from a smooth shank nail?

An annular ring shank nail has ridges along the shank that interlock with wood fibers as the nail is driven in. This significantly increases withdrawal resistance - the force required to pull the nail back out - compared to a smooth shank nail of the same size. For framing and exterior wood connections where movement, moisture, and load cycling are factors, this enhanced grip helps maintain a more secure and durable fastened joint over time.

Why use Type 304 stainless steel nails instead of galvanized nails for outdoor or treated lumber applications?

Type 304 stainless steel offers strong corrosion resistance that makes it well-suited for exterior construction, outdoor wood framing, and applications involving pressure-treated lumber where chemical exposure can degrade standard fasteners. Stainless steel nails maintain their structural integrity in wet and corrosive environments where galvanized coatings may eventually break down.

What does the 16d penny size indicate about this nail?

The 16d designation is a traditional nail sizing classification that corresponds to a 3-1/2" length. It is one of the most common sizes used in dimensional wood framing, making it a standard choice for a wide range of structural wood-to-wood fastening tasks in residential and commercial construction.

Are these nails suitable for hand-nailing and pneumatic nailers?

These are loose common nails sold individually and are intended for hand-nailing applications. They are not collated or strip-formatted for pneumatic nail guns. The full round head and diamond point design make them straightforward to drive by hand with standard framing hammers across common lumber types.