Simpson 3d 1-1/4" Shake and Shingle Siding and Roofing Nail in Type 316 Stainless Steel by Simpson Strong-Tie delivers a corrosion-resistant fastening solution built for demanding exterior applications. Designed for securing wood shakes and shingles on both roofing and siding installations, this 14-gauge nail features a slender annular-ring shank and diamond point that work together to reduce wood splitting while dramatically improving withdrawal resistance - keeping shakes and shingles firmly in place through years of weather exposure. The Type 316 stainless steel construction offers superior resistance to saltwater, moisture, and harsh outdoor environments, making it an excellent choice for coastal installations and applications where corrosion protection is critical.

Key Features

• Type 316 Stainless Steel material - provides superior corrosion resistance in saltwater, coastal, and chemically harsh outdoor environments where standard galvanized fasteners may fail prematurely.
• Annular-ring shank - increases withdrawal resistance compared to smooth-shank nails, creating a more secure attachment that holds shakes and shingles firmly against wind uplift and seasonal movement.
• 7/32" full round head with checkered pattern - delivers ample bearing surface to grip shake and shingle material without tearing through, while the checkered texture blends with wood grain, reduces glare from sunlight, and accepts surface finishes for a cleaner appearance.
• Slender 0.083" shank diameter - minimizes splitting as the nail is driven into wood shakes and shingles, protecting the material integrity and reducing the risk of cracked or damaged fastening points.
• Diamond point tip - allows easier driving and more precise nail placement, reducing installation effort and improving efficiency on roofing and siding projects.
• 14-gauge construction - provides the structural strength needed to hold shakes and shingles securely while remaining compatible with standard nail driving tools.
• Made in the United States - manufactured domestically to consistent quality standards expected in residential and commercial exterior fastening applications.

Why This Product

• Built for coastal and high-moisture environments: Type 316 stainless steel goes beyond standard stainless grades in corrosion resistance, making these nails well-suited for oceanside installations, wet climates, and exterior applications where long-term fastener integrity is essential.
• Engineered to protect your shakes and shingles: The combination of a slender 0.083" shank and diamond point means the nail drives cleanly with minimal splitting risk - preserving the structural integrity of wood shakes and shingles that can be vulnerable to cracking during installation.
• Stronger hold for roofing and siding that stays put: The annular-ring shank actively resists nail pull-through, giving roofing and wood siding installations the long-term staying power needed to withstand wind, thermal cycling, and moisture-driven wood movement.
• Low-profile finish that blends with wood: The checkered head pattern reduces surface glare and integrates visually with wood grain - a practical detail for exposed shake and shingle surfaces where fastener appearance matters alongside performance.

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 3d
• Length: 1-1/4 in.
• Gauge: 14
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Head Type: Full Round Head
• Head Diameter: 7/32 in.
• Head Pattern: Checkered
• Shank Type: Annular-Ring Shank
• Shank Diameter: 0.083 in.
• Point Type: Diamond Point
• Approx. Count per Lb.: 470
• Country of Origin: United States

Available Pack Options

• T3SN71: 1 Lb (470)
• T3SN7B: 25 Lb (11750)

Approved Applications

• Roofing
• Fastening Wood Siding

Frequently Asked Questions

What makes Type 316 stainless steel a better choice for shake and shingle nails than standard stainless or galvanized finishes?

Type 316 stainless steel contains additional alloying elements that provide enhanced resistance to corrosion from saltwater, moisture, and chemicals compared to standard stainless grades. For exterior roofing and wood siding applications - especially in coastal or high-humidity environments - this added protection helps ensure the fastener maintains its integrity and holding strength over the long term.

Why does this nail use an annular-ring shank instead of a smooth shank?

The annular-ring shank increases withdrawal resistance, meaning the nail resists being pulled back out of the wood far more effectively than a smooth-shank nail. For shake and shingle roofing and siding applications, this translates to a more secure attachment that holds up against wind uplift and the natural expansion and contraction of wood over time.

Will the slender shank cause any concerns about nail strength when fastening shakes and shingles?

The slender 0.083" shank diameter is specifically designed for shake and shingle applications where splitting the wood is a greater concern than shear load. The annular-ring shank compensates for the reduced diameter by significantly increasing withdrawal resistance, so the nail holds firmly while protecting the shake or shingle material from cracking during installation.

Is this nail compatible with standard pneumatic nail guns used in roofing and siding work?

This nail is a 3d penny size with a 1-1/4" length, 14 gauge, and full round head with a 7/32" diameter. Compatibility with a specific pneumatic nailer depends on that tool's specifications for nail gauge, head type, and length. Refer to your nail gun manufacturer's guidelines to confirm compatibility before use.