Simpson 1-1/4 in. 3d Annular Ring Shank Common Nail in Type 304 Stainless Steel is a heavy-duty fastener built for exterior wood framing and wood-to-wood connections where corrosion resistance and long-term holding power are essential. The annular ring shank design dramatically increases withdrawal resistance compared to a smooth shank nail, making it an ideal choice for permanent wood foundations, outdoor decking structures, and other applications where fastener pullout is a concern. Crafted from Type 304 stainless steel, this 14-gauge nail delivers reliable performance in demanding outdoor environments where standard carbon-steel fasteners would corrode over time.

Key Features

• Annular ring shank - increases withdrawal resistance over smooth-shank nails, locking into wood fibers for a more secure, long-lasting attachment that resists loosening over time
• Type 304 stainless steel material and finish - provides strong corrosion resistance in outdoor and moisture-exposed environments, helping wood connections remain structurally sound without the rust staining or degradation associated with plain steel fasteners
• 14-gauge shank (0.083 in. diameter) - offers a firm, sturdy profile that drives cleanly without excessive splitting in typical wood framing applications
• Full round head (7/32 in. diameter) - maximizes bearing surface against the wood, distributing load across a wider area and reducing the chance of the nail pulling through
• Diamond point tip - self-starting geometry allows for accurate nail placement and easier driving, reducing deflection and material waste during installation
• 1-1/4 in. length (3d penny size) - a compact yet effective length suited for lighter wood-to-wood fastening tasks where precision placement in thinner stock is needed
• Made in the United States - domestic manufacturing supports consistent quality control and reliable material traceability for professional contractors

Why This Product

• For exterior framing and outdoor wood construction projects, the Type 304 stainless steel construction resists corrosion in wet and high-humidity conditions - protecting the connection for the long term without the rust bleed that degrades treated lumber and composite materials
• The annular ring shank directly addresses one of the most common fastener failure modes - nail withdrawal - making this nail the right choice when code compliance or structural integrity in wood framing requires enhanced pullout resistance
• At 14 gauge with a full round head, this nail strikes the right balance between driving ease and structural holding power, making it a practical choice for wood-to-wood applications where both speed and reliability matter
• With approximately 473 nails per pound, this nail is well-suited for volume fastening work, giving professionals a reliable reference for estimating project material needs

Specifications

• Brand: Simpson Strong-Tie
• Length: 1-1/4 in.
• Penny Size: 3d
• Gauge: 14
• Shank Diameter: 0.083 in.
• Shank Type: Annular-Ring Shank
• Head Diameter: 7/32 in.
• Head Type: Full Round Head
• Point Type: Diamond Point
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Approx. Count Per Lb: 473
• Country of Origin: United States

Available Pack Options

• S3ACN1: 1 Lb (473)
• S3ACN5: 5 Lb (2365)
• S3ACNB: 25 Lb (11825)

Approved Applications

• Fastening Wood-to-Wood
• Framing - Wood

Frequently Asked Questions

What is the advantage of an annular ring shank over a smooth shank nail?

An annular ring shank nail features ridges along the shank that grip wood fibers after driving, significantly increasing withdrawal resistance compared to a smooth shank nail. This means the nail is much harder to pull out over time, making it the preferred choice for exterior and structural wood-to-wood fastening applications where long-term holding power is critical.

Why is Type 304 stainless steel recommended for outdoor wood fastening?

Type 304 stainless steel provides excellent corrosion resistance in outdoor environments where moisture, humidity, and weather exposure would cause standard carbon-steel nails to rust. Rust can weaken the fastener and stain surrounding wood or composite materials. Using stainless steel fasteners in exterior applications helps maintain both structural integrity and the appearance of the finished project.

What does the 3d penny size designation mean for this nail?

The "3d" designation is a traditional penny size classification used in the nail industry to describe nail length. In this case, 3d corresponds to a 1-1/4 in. length nail. Penny size is a standard reference used by contractors and builders to quickly identify and specify nail lengths for different applications.

Is this nail suitable for permanent wood foundation construction?

Stainless steel nails are widely recognized in construction standards as appropriate fasteners for permanent wood foundations due to their superior corrosion resistance compared to standard or galvanized nails. The Type 304 stainless steel material used in this nail provides strong resistance to corrosion, making it a fitting choice for wood framing applications that require durable, long-lasting fasteners in contact with treated lumber or moisture-prone environments.