Simpson 4d x 1-1/2" Annular Ring Shank Box Nail in 304 Stainless Steel is a professional-grade fastener from Simpson designed for applications where corrosion resistance and secure holding power are essential. The annular ring shank design dramatically increases withdrawal resistance compared to smooth shank nails, making these stainless steel nails an ideal choice for decking, siding, permanent wood foundations, and exterior construction where long-term performance is required. Crafted from Type 304 stainless steel, these box nails resist rust and staining in demanding outdoor environments, delivering lasting reliability in wood construction projects.

Key Features

• Type 304 Stainless Steel construction - resists corrosion, rust, and staining in outdoor and moisture-prone environments, extending the service life of your fastened assemblies
• Annular ring shank profile - significantly increases withdrawal resistance compared to smooth shank nails, ensuring a more secure and permanent attachment that resists pull-through over time
• Full round head with checkered pattern - the checker pattern blends naturally with wood grain, reduces glare from sunlight, and accepts surface finishes for a cleaner finished appearance
• Diamond point tip - promotes accurate placement and easier driving through wood, reducing splitting risk and improving fastening efficiency
• 14-gauge, 0.083" shank diameter - the slim box nail profile reduces wood splitting while still delivering strong holding performance in a wide range of lumber types
• 1-1/2" nail length (4d penny size) - sized appropriately for lighter structural and finish applications such as thin lumber, trim, sheathing, and decking surfaces

Why This Product

• The annular ring shank is engineered to resist withdrawal forces that cause smooth nails to loosen over time, making these a more durable fastening solution for permanent structural assemblies.
• Type 304 stainless steel makes these nails a recommended choice for construction of permanent wood foundations per ANSI/AF&PA Permanent Wood Foundations Design Specifications, where corrosion resistance is a code-driven requirement.
• The checkered full round head accepts surface finishes and paints without standing out visually, which matters for exterior trim, siding, and decking where aesthetics alongside performance are both priorities.
• Made in the United States by Simpson, a trusted name in structural fasteners and connectors, these nails meet the quality and consistency standards expected on professional job sites.

Specifications

• Brand: Simpson Strong-Tie
• Coating/Material: Type 304 Stainless Steel
• Penny Size: 4d
• Length: 1-1/2 in.
• Head Diameter: 2/9 in.
• Shank Diameter: 0.083 in.
• Gauge: 14
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Approximate Count per Lb.: 413
• Country of Origin: United States

Available Pack Options

• S4ABN1: 1 Lb (413)
• S4ABN5: 5 Lb (2065)
• S4ABNB: 25 Lb (10325)

Frequently Asked Questions

What is the difference between Type 304 and Type 316 stainless steel for these nails?

Type 304 stainless steel offers excellent corrosion resistance for most outdoor and permanent wood foundation applications. Type 316 stainless steel provides superior corrosion resistance and is the preferred choice for seaside or coastal environments where salt air and moisture exposure are more intense. If your project is located near the ocean or in a highly corrosive environment, Type 316 is recommended. For inland and standard exterior applications, Type 304 performs reliably.

Why should I use an annular ring shank nail instead of a smooth shank nail?

The annular ring shank features a series of grooves along the nail shaft that grip into wood fibers as the nail is driven. This mechanical interlock dramatically increases withdrawal resistance - the force required to pull the nail back out - compared to a smooth shank nail of the same size. This makes annular ring shank nails a more secure and long-lasting choice for applications subject to movement, swelling, or vibration, such as decking, siding, and permanent foundations.

Are these nails recommended for permanent wood foundation construction?

Yes. Stainless steel nails, including these Type 304 annular ring shank box nails, are recommended for construction of permanent wood foundations per the ANSI/AF&PA Permanent Wood Foundations Design Specifications. The corrosion resistance of stainless steel is critical in below-grade and moisture-rich environments where standard galvanized fasteners may degrade over time.

Will the checkered head pattern affect the finished appearance of my project?

The checkered pattern on the full round head is specifically designed to blend with wood grain and reduce glare from sunlight. It also accepts surface finishes, stains, and paints, so the nail heads can be finished over to match the surrounding wood surface. This makes these nails well-suited for visible exterior applications such as decking boards, siding panels, and exterior trim where aesthetics matter alongside holding performance.

Note: Product dimensions may differ from picture. Please see the item description for specifications.