Simpson 3d 1-1/4" Shake and Shingle Siding and Roofing Nail in 304 Stainless Steel by Simpson Strong-Tie is a purpose-built fastener designed for securing wood shakes and shingles on siding and roofing applications where moisture resistance and long-term holding power are essential. Crafted from Type 304 stainless steel with an annular-ring shank, this nail delivers reliable corrosion resistance and superior withdrawal resistance - making it a trusted choice for exterior installations exposed to the elements. The slender 14-gauge profile minimizes wood splitting, while the diamond point allows for smooth, consistent driving through shake and shingle material.

Key Features

• Type 304 Stainless Steel construction - resists corrosion in outdoor and moisture-exposed environments, helping extend the service life of shake and shingle installations
• Annular-ring shank - dramatically increases withdrawal resistance compared to smooth-shank nails, keeping shakes and shingles securely attached over time
• 7/32" full round, flat head with checkered pattern - provides ample bearing surface to hold shakes and shingles firmly without breaking through; the checkered texture blends with wood grain, reduces glare from sunlight, and accepts surface finishes
• Slender 14-gauge shank (0.083" diameter) - minimizes splitting of wood shakes and shingles during installation, reducing material waste and rework
• Diamond point tip - allows for easier driving through dense shake and shingle material, improving installation speed and reducing installer fatigue
• 1-1/4" length (3d penny size) - sized appropriately for shake and shingle siding and roofing applications, providing adequate penetration without over-driving
• Made in the United States - domestically produced to Simpson Strong-Tie quality standards for consistent performance fastener to fastener

Why This Product

• The Type 304 stainless steel material makes this nail suitable for exterior roofing and siding environments where standard steel fasteners would corrode and stain wood surfaces over time - a common problem with uncoated or inferior fasteners in wet or coastal conditions.
• The annular-ring shank sets this nail apart from smooth-shank alternatives by mechanically locking into wood fibers, reducing the risk of nail pop-out or shingle lift caused by repeated freeze-thaw cycles and wind uplift.
• The slender shank diameter of 0.083" is specifically engineered for thin, brittle shake and shingle materials that can easily split with a heavier-gauge fastener - protecting the integrity of the material and the appearance of the finished surface.
• The checkered full round head blends discreetly into wood grain and accepts stains or surface finishes, making this nail a practical choice when finished appearance matters as much as holding strength.

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 3d
• Length: 1-1/4 in.
• Gauge: 14
• Shank Diameter: 0.083 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Diameter: 7/32 in.
• Head Pattern: Checkered
• Point Type: Diamond Point
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Approx. Count Per Lb: 470
• Country of Origin: United States

Available Pack Options

• S3SN71: 1 Lb (470)
• S3SN75: 5 Lb (2350)
• S3SN7B: 25 Lb (11750)

Frequently Asked Questions

What makes the annular-ring shank better than a smooth shank for shake and shingle applications?

The annular-ring shank features rings along the shank that mechanically interlock with wood fibers after driving, significantly increasing withdrawal resistance compared to a smooth-shank nail. This helps prevent nail pop-out and keeps shakes and shingles firmly secured even under wind uplift or repeated thermal expansion and contraction cycles.

Is Type 304 stainless steel appropriate for exterior roofing and siding use?

Yes. Type 304 stainless steel provides corrosion resistance suited for exterior environments where the fastener will be exposed to moisture, rain, and humidity. This makes it a reliable choice for shake and shingle siding and roofing installations where long-term performance is required.

Why does the shank diameter matter when nailing shakes and shingles?

Shakes and shingles are relatively thin and can be prone to splitting if a heavy-gauge fastener is used. The slender 0.083" shank diameter of this nail is designed to minimize splitting during installation, protecting the material and maintaining the integrity of the finished surface.

What does the checkered head pattern offer beyond appearance?

The checkered pattern on the full round head serves multiple practical purposes: it blends with wood grain for a less conspicuous look, reduces glare from sunlight that a smooth head would reflect, and accepts surface finishes such as stains or paints - making it easier to achieve a finished, uniform appearance on exposed siding installations.