Simpson 8d x 2 3/8" 20-22 Degree Collated Ring-Shank Nail in Type 304 Stainless Steel from Simpson Strong-Tie is engineered for wood-to-wood fastening and wood framing applications where withdrawal resistance and corrosion resistance are essential. The annular-ring shank bites firmly into wood fibers, making these collated framing nails an ideal choice for structural connections that must hold under stress. Designed for use with many major manufacturers' pneumatic nailers, these 12-gauge stainless steel strip nails help professionals reduce driving force and accelerate installation speed on the jobsite.

Key Features

• Type 304 Stainless Steel material - provides strong corrosion resistance for outdoor, coastal-adjacent, and moisture-exposed framing applications, keeping connections secure over time.
• Annular-ring (ring-shank) shank design - dramatically increases withdrawal resistance compared to smooth-shank nails, delivering a more secure and durable wood-to-wood attachment that resists pullout forces.
• 20-22 degree plastic strip collation - compatible with many major manufacturers' pneumatic framing nailers, allowing fast, consistent nail driving and reducing downtime between shots.
• Full round head with checkered pattern - the checker head blends with wood grain, reduces sunlight glare, and accepts surface finishes, giving fastened surfaces a clean, professional appearance.
• Diamond point tip - penetrates wood cleanly and efficiently, reducing splitting risk and making each drive smoother and more controlled.
• 12-gauge, 2 3/8" length at 8d penny size - sized right for standard wood framing tasks, providing the depth of penetration needed for structural wood connections.
• Made in the United States - manufactured domestically to consistent quality standards, ensuring reliable performance across the entire strip.

Why This Product

• When framing in environments where moisture or corrosion is a concern, Type 304 Stainless Steel construction means the nail won't rust and weaken the connection over time - a critical advantage over standard bright or vinyl-coated nails in exposed or damp conditions.
• The annular-ring shank addresses one of the most common failure points in wood fastening - nail withdrawal - by mechanically locking into wood fibers for a hold that outperforms smooth-shank alternatives in structural applications.
• The 20-22 degree plastic strip format works with pneumatic tools from many leading manufacturers, meaning contractors don't need a specialized or uncommon nailer to use these fasteners - they fit right into existing tool setups.
• The checkered full round head is engineered to accept surface finishes and blend with wood grain, making these nails a practical choice not just for hidden structural framing but also for applications where the nail head may be visible after installation.

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 8d
• Length: 2 3/8 in.
• Gauge: 12
• Shank Diameter: 0.113 in.
• Head Diameter: 9/32 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Collation Angle: 20-22 Degrees
• Collation Type: Plastic Strip
• Material / Finish: Type 304 Stainless Steel
• Country of Origin: United States

Available Pack Options

• S12A237CNJ: 1000 Pk
• S12A237CNB: 5000 Pk

Approved Applications

• Fastening Wood-to-Wood
• Framing - Wood

Frequently Asked Questions

What type of pneumatic nailer is compatible with these collated nails?

These nails use a 20-22 degree plastic strip collation format, which is compatible with many major manufacturers' pneumatic framing nailers. For a full list of confirmed compatible tools, refer to the Tool Compatibility Matrix linked in the Downloads section below.

Why choose a ring-shank nail over a smooth-shank nail for wood framing?

The annular-ring shank on these nails mechanically grips wood fibers after driving, significantly increasing withdrawal resistance compared to smooth-shank nails. This makes them well suited for structural wood-to-wood connections where holding power is critical.

What is the advantage of the checkered head pattern on these nails?

The checker pattern on the full round head is designed to blend with wood grain, reduce sunlight glare on exposed surfaces, and accept surface finishes. This makes the nail head less visually intrusive after installation and allows it to take paint or other coatings applied to the surrounding wood.

Is Type 304 Stainless Steel appropriate for outdoor or moisture-exposed framing applications?

Yes. Type 304 Stainless Steel provides corrosion resistance that makes these nails suitable for applications where the fastener may be exposed to moisture. For seaside or highly corrosive environments, a Type 316 stainless steel option may be considered depending on project requirements.

Downloads and Resources

• Tool Compatibility Matrix

Note: Product dimensions may differ from picture.