Simpson 7d Shake and Shingle Siding/Roofing Nail in 2-1/4" Type 304 Stainless Steel by Simpson Strong-Tie is engineered for secure, long-lasting attachment of wood shakes, shingles, and exterior siding. The full round head with a checkered face delivers firm bearing surface against wood surfaces, while the annular-ring shank bites deep into the substrate for superior withdrawal resistance - making this nail a reliable choice for roofing and exterior cladding projects exposed to moisture and weather cycles. The slender 13-gauge shank reduces the risk of splitting thin shake and shingle material, and the sharp diamond point drives cleanly without pre-drilling.

Key Features

• Type 304 Stainless Steel material - provides strong corrosion resistance for exterior applications where moisture, humidity, and weather exposure are ongoing concerns, helping fasteners last as long as the shakes and shingles they secure.
• Annular-ring shank - the ringed profile grips surrounding wood fibers more aggressively than a smooth shank, dramatically increasing withdrawal resistance and keeping shingles firmly in place through wind and thermal movement.
• Full round head with checkered pattern - the 7/32 in. diameter head spreads load across the shingle face to prevent pull-through, while the textured checkered face blends with natural wood grain, reduces sunlight glare, and accepts surface finishes for a cleaner finished appearance.
• 13-gauge slender shank (0.092 in. diameter) - thinner than standard nails, this shank penetrates delicate shake and shingle material without cracking or splitting the wood, preserving the integrity of each piece during installation.
• Diamond point tip - the precision-ground point starts easily and drives straight, reducing effort and improving accuracy when fastening shakes, shingles, and exterior siding boards.
• 2-1/4 in. length / 7d penny size - sized specifically for shake and shingle siding and roofing applications, providing adequate penetration into sheathing or framing for a secure, code-compatible hold.
• Made in the United States - manufactured domestically to consistent quality standards, ensuring reliable performance across every fastener in the batch.

Why This Product

• When attaching wood shakes or shingles to exterior walls or roof decks, splitting is a constant risk - this nail's 13-gauge slender shank (0.092 in. diameter) is specifically sized to drive through thin, brittle shingle material without cracking it, protecting your materials and your finished work.
• The annular-ring shank dramatically outperforms smooth-shank nails in withdrawal resistance, meaning shingles and siding panels stay firmly fastened even as wood expands and contracts through seasonal weather cycles.
• Type 304 Stainless Steel construction makes these nails well-suited for humid, wet, and coastal-adjacent environments where standard bright or zinc-coated fasteners may corrode and stain the surrounding wood surface over time.
• With approximately 216 nails per pound, this is a high-count, lightweight fastener that works efficiently for large roofing and siding installations where both corrosion resistance and driving speed matter.

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 7d
• Length: 2-1/4 in.
• Gauge: 13
• Shank Diameter: 0.092 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
• Approximate Count Per Lb: 216
• Country of Origin: United States

Available Pack Options

• S7SN71: 1 Lb (216)
• S7SN75: 5 Lb (1080)
• S7SN7B: 25 Lb (5400)

Frequently Asked Questions

Why is Type 304 Stainless Steel the right material for shake and shingle nails?

Type 304 Stainless Steel offers strong corrosion resistance, making it well-suited for exterior roofing and siding applications where nails are regularly exposed to moisture, rain, and humidity. Unlike plain steel or lower-grade coated nails, stainless steel fasteners resist rust that can stain wood surfaces and weaken holding power over time.

What makes the annular-ring shank important for shingle installation?

The annular-ring shank features raised rings along its length that grip surrounding wood fibers and resist being pulled back out. This greatly increases withdrawal resistance compared to smooth-shank nails, keeping shakes and shingles securely fastened even through the wood movement and wind loads typical of exterior roofing and siding environments.

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

Wood shakes and shingles are thin, often dry, and prone to splitting when a nail that is too thick is driven through them. The 0.092 in. diameter slender shank on this nail is intentionally sized to penetrate shake and shingle material cleanly, reducing the chance of cracking or splitting a piece during installation - helping preserve both the material and the integrity of the finished surface.

What does the checkered head pattern offer beyond appearance?

The checkered pattern on the 7/32 in. full round head serves three practical purposes: it blends visually with natural wood grain for a less obtrusive look, it reduces glare from sunlight on rooftop or siding installations, and it provides a surface that accepts paint or other finishes - making it easier to touch up or match the surrounding material after installation.

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