Simpson 8d x 2-1/2" 20 deg.-22 deg. Collated Ring-Shank Nail in Type 304 Stainless Steel (11 Gauge) is a professional-grade fastener engineered for wood framing and wood-to-wood connections where corrosion resistance and holding power are critical. Featuring an annular-ring shank and a full round head with a checkered pattern, these plastic-strip collated nails are designed to work with pneumatic nailers from many major manufacturers, helping crews install faster and with less driving effort. Ideal for exterior framing, decking substructures, and other applications where moisture exposure demands a durable stainless finish, this nail delivers dependable performance job after job.

Key Features

• Type 304 Stainless Steel material - resists rust and corrosion in moisture-exposed and outdoor environments, making these nails suitable where standard galvanized fasteners may fail over time
• Annular-ring (ring) shank - the ridged shank geometry increases withdrawal resistance compared to smooth-shank nails, creating a more secure and lasting wood-to-wood attachment
• 20 deg.-22 deg. plastic-strip collation - compatible with a wide range of pneumatic framing nailers from many major manufacturers, reducing hand-driving time and fatigue on large framing jobs
• Full round head, 9/32" diameter - maximizes bearing surface on the wood face for greater holding strength and code compliance in structural framing applications
• Checkered head pattern - blends with wood grain, reduces sunlight glare, and accepts surface finishes for a cleaner finished appearance
• Diamond point tip - penetrates wood cleanly and efficiently, reducing splitting and improving drive consistency
• 11 gauge / 0.120" shank diameter - provides a balance of strength and drivability suited to standard wood framing tasks
• Made in the United States - domestic manufacturing supports consistent quality control and material standards

Why This Product

• When framing or fastening wood in outdoor, coastal, or high-humidity environments, the Type 304 stainless steel construction protects against corrosion that would compromise the structural integrity of standard steel nails over time
• The annular-ring shank design directly addresses the common problem of nail pull-through and loosening in wood connections - the rings grip the wood fibers for withdrawal resistance that smooth-shank nails cannot match
• Plastic-strip collation at 20 deg.-22 deg. means these nails work with pneumatic tools from many popular brands, so there is no need to switch tool platforms or change nailers on the job site
• The checkered full round head is engineered to accept surface finishes and reduce glare - an important consideration for visible framing work or applications where appearance and coating adhesion matter

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 8d
• Length: 2-1/2 in.
• Gauge: 11
• Shank Diameter: 0.120 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Diameter: 9/32 in.
• Head Pattern: Checkered
• Point Type: Diamond Point
• Collation Angle: 20 deg.-22 deg.
• Collation Type: Plastic Strip
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Country of Origin: United States

Available Pack Options

• S11A250CNJ: 1000 Pk
• S11A250CNB: 4000 Pk

Approved Applications

• Framing - Wood
• Fastening Wood-to-Wood

Frequently Asked Questions

What is the difference between an annular-ring shank and a smooth shank nail?

An annular-ring shank features ridges along the nail body that grip wood fibers as the nail is driven, significantly increasing withdrawal resistance compared to a smooth shank. This makes ring-shank nails a better choice for applications where pull-out force or vibration could loosen a standard nail over time.

What pneumatic nailers are compatible with these 20 deg.-22 deg. plastic-strip collated nails?

These nails are compatible with many major manufacturers' pneumatic framing nailers that accept 20 deg.-22 deg. plastic-strip collated nails. For a detailed list of verified compatible tool models, refer to the Tool Compatibility Matrix available in the Downloads and Resources section below. You may also contact us and a sales professional will assist with fastener selection.

Why is Type 304 stainless steel used in these nails, and what environments is it suited for?

Type 304 stainless steel provides strong corrosion resistance, making these nails well-suited for outdoor wood framing, moisture-exposed structures, and environments where standard carbon steel fasteners would rust or degrade. For seaside or highly corrosive environments, a Type 316 stainless steel option may be considered.

What does the checkered head pattern on these nails offer?

The checkered pattern on the full round head is designed to blend with wood grain, reduce sunlight glare, and accept surface finishes. This is particularly useful in applications where the fastener head may be visible or where a painted or stained surface finish will be applied after installation.

Downloads and Resources

• Tool Compatibility Matrix

Note: Product dimensions may differ from picture.