Product Description
Simpson S8APB5 Post and Beam Nail, Annular Ring Shank - 2-1/2 in. x.120 in. Type 304 Stainless Steel (5 lb.) is a Simpson Strong-Tie 8d nail built for post-and-beam construction and general framing applications where long-term holding power and corrosion resistance are non-negotiable. The annular ring shank grips wood fibers aggressively to resist pull-out forces over time, while the Type 304 stainless steel construction stands up to demanding outdoor environments and direct contact with preservative-treated wood. The checkered head pattern and diamond point round out a fastener designed to install cleanly and finish well in exposed structural applications.
Key Features
- Annular ring shank - increases withdrawal resistance compared to a smooth shank, giving framing and post-and-beam connections a stronger, more secure grip that holds up under long-term structural loads.
- Type 304 stainless steel material and finish - provides high-level corrosion resistance, making these nails a reliable choice for exterior wood construction and preservative-treated wood applications where rust or staining would compromise the connection over time.
- Checker pattern on the full round head - blends with wood grain, reduces glare from sunlight, and accepts surface finishes so the fastener stays visually unobtrusive in exposed post-and-beam work.
- Diamond point tip - allows for smooth, efficient nail starts, reducing the effort required to drive each nail and minimizing the risk of splitting the wood during installation.
- Recommended by ANSI/AF&PA Permanent Wood Foundations Design Specifications - confirms that stainless steel nails of this type meet recognized industry standards for permanent wood foundation construction, giving builders confidence in code-sensitive applications.
- Made in the United States by Simpson Strong-Tie - the fastener comes from a manufacturer with a focused track record in structural connectors and fastening systems, backed by engineering resources specific to construction applications.
Why This Product
- Holds tighter, longer in structural wood connections - the annular ring shank dramatically increases withdrawal resistance over a smooth shank nail, making this fastener well-suited for post-and-beam and general framing work where joint integrity matters over the life of the structure.
- Built specifically for outdoor and treated-wood environments - Type 304 stainless steel is not simply a cosmetic upgrade; it delivers high-level corrosion resistance that keeps fasteners performing reliably in exterior applications and in contact with preservative-treated wood chemicals that can degrade standard steel over time.
- Recognized for permanent wood foundation use - stainless steel nails of this type are specifically recommended under the ANSI/AF&PA Permanent Wood Foundations Design Specifications, making them a straightforward choice when a project calls for a fastener that meets established structural guidelines.
- Designed to blend in on exposed surfaces - the checkered full round head reduces glare and accepts surface finishes, so the nail stays inconspicuous in visible post-and-beam assemblies where appearance is part of the finished result.
Specifications
- Model Number: S8APB5
- Brand: Simpson Strong-Tie
- Material: Type 304 Stainless Steel
- Finish: Type 304 Stainless Steel
- Gauge: 11
- Penny Size: 8d
- Length: 2-1/2 in.
- Shank Type: Annular-Ring Shank
- Shank Diameter: 0.120 in.
- Head Type: Full Round Head
- Head Pattern: Checkered
- Head Diameter: 17/64 in.
- Point Type: Diamond Point
- Package Size: 5 lb. (approximately 115 nails per lb.)
- Country of Origin: United States
Approved Applications
- General Framing
- Post-and-beam construction
- Permanent wood foundation construction per ANSI/AF&PA Permanent Wood Foundations Design Specifications
- Outdoor and exterior wood construction requiring corrosion-resistant fastening
- Preservative-treated wood applications
Note: Product dimensions may differ from picture. Please refer to the specifications listed above for accurate product details.
Frequently Asked Questions
Why is an annular ring shank better than a smooth shank for post-and-beam applications?
The annular ring shank increases withdrawal resistance compared to a smooth shank nail. This means the rings grip the wood fibers more aggressively, providing a more secure attachment that is better able to resist the forces that can cause a nail to pull out over time - a critical advantage in structural post-and-beam and framing applications.
Why is Type 304 stainless steel recommended for outdoor and preservative-treated wood construction?
Type 304 stainless steel provides high-level corrosion resistance, making these nails well-suited for exterior environments and contact with preservative-treated wood. They are specifically recommended for construction of permanent wood foundations per the ANSI/AF&PA Permanent Wood Foundations Design Specifications, where long-term durability against moisture and chemical exposure is essential.
What is the purpose of the checker pattern on the nail heads?
The checker pattern on the full round heads serves three practical purposes: it blends with wood grain for a more natural appearance, reduces glare from sunlight on exposed surfaces, and allows the head to accept surface finishes such as stain or paint - making these nails a good choice for visible post-and-beam and outdoor structural work.
How many nails are included in a 5 lb. package of the S8APB5?
Each package contains 5 lb. of nails, with approximately 115 nails per pound, for a total of approximately 575 nails per package.
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