Product Description
The Simpson Strong-Tie S16APBB Post and Beam Nail is a 16d, 3-1/2 in. annular ring shank fastener built from Type 304 stainless steel, delivering high-level corrosion resistance for demanding outdoor construction, post-and-beam framing, preservative-treated wood applications, and permanent wood foundation work. At 9 gauge with a 0.148 in. shank diameter, this nail is engineered to hold securely in structural connections where long-term performance and weather exposure are primary concerns. The full round head features a checkered pattern that blends naturally with wood grain, while a precision diamond point makes every drive smooth and efficient - giving contractors and builders a reliable, professional-grade fastener for general framing and heavy timber construction alike.
Key Features
- Annular ring shank design - significantly increases withdrawal resistance compared to smooth shank nails, keeping structural connections secure over time and under load
- Type 304 stainless steel material - provides high-level corrosion resistance, making this nail well-suited for exterior framing, treated lumber, and permanent wood foundations where moisture exposure is a constant factor
- Checkered head pattern - blends with wood grain, reduces sunlight glare, and readily accepts surface finishes for a clean, professional appearance on exposed post-and-beam work
- Diamond point - allows for smooth, efficient nail starts, reducing splitting risk and saving time on every drive
- Full round head - delivers broad bearing surface for strong, consistent pull-through resistance in structural framing applications
- Recommended for permanent wood foundation construction - meets the stainless steel fastener requirements outlined in the ANSI/AF&PA Permanent Wood Foundations Design Specifications, giving builders confidence in code-sensitive applications
- 25 lb. package (approximately 56 nails per lb.) - provides a substantial working supply suited to production framing and large post-and-beam projects
- Made in the United States - manufactured domestically under Simpson Strong-Tie quality standards
Why This Product
- Built for corrosive environments - Type 304 stainless steel construction makes these nails a dependable choice wherever standard fasteners would corrode prematurely, including outdoor structures, treated wood framing, and below-grade foundation applications.
- Stronger grip than smooth shank alternatives - the annular ring shank dramatically increases withdrawal resistance, so connections stay tight even as wood expands, contracts, and shifts with seasonal changes - a critical advantage in structural post-and-beam and general framing work.
- Designed for aesthetics as well as performance - the checkered head pattern is purpose-built to blend with wood grain and accept surface finishes, making this nail an ideal choice for exposed timber framing where appearance matters alongside structural integrity.
- Code-recognized for permanent wood foundations - stainless steel nails of this type are specifically recommended under the ANSI/AF&PA Permanent Wood Foundations Design Specifications, giving builders and inspectors a clear, verifiable compliance path on foundation projects.
Specifications
- Model Number (MPN): S16APBB
- Material: Type 304 Stainless Steel
- Finish: Type 304 Stainless Steel
- Gauge: 9
- Penny Size: 16d
- Length: 3-1/2 in.
- Shank Type: Annular-Ring Shank
- Shank Diameter: 0.148 in.
- Head Type: Full Round Head
- Head Diameter: 5/16 in.
- Head Pattern: Checkered
- Point Type: Diamond Point
- Package Quantity: 25 lb. (approx. 56 nails per lb.)
- Country of Origin: United States
Approved Applications
- General Framing
- Post-and-beam construction
- Preservative-treated wood fastening
- Permanent wood foundation construction (per ANSI/AF&PA Permanent Wood Foundations Design Specifications)
What's Included
- Simpson Strong-Tie S
Frequently Asked Questions
Are these nails suitable for use with preservative-treated wood?
Yes. Type 304 stainless steel nails like the S16APBB are recommended for construction involving preservative-treated wood and are specifically recommended for permanent wood foundation construction per the ANSI/AF&PA Permanent Wood Foundations Design Specifications.
What makes the annular ring shank better than a smooth shank nail?
The annular ring shank design significantly increases withdrawal resistance compared to a smooth shank, meaning the nail resists being pulled back out of the material over time. This provides a more secure, long-lasting attachment - particularly important in structural framing and outdoor applications where connections are subjected to load and movement.
How many nails are included in one package, and what are the nail's key dimensions?
Each package contains 25 lb. of nails, which is approximately 56 nails per pound. Each nail is 3-1/2 in. long (16d penny size), made from 9-gauge steel with a 0.148 in. shank diameter and a 5/16 in. full round head diameter.
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 naturally with wood grain for a more refined appearance, reduces glare from sunlight on exposed surfaces, and allows the head to accept surface finishes so the nail can be painted or stained to match the surrounding material.
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