Simpson 8d Shake and Shingle Siding/Roofing Nail in 2-1/2" Length, Type 304 Stainless Steel by Simpson Strong-Tie is a precision-engineered fastener designed for securing wood shakes and shingles in both siding and roofing applications. Built from Type 304 stainless steel with an annular-ring shank, this nail delivers lasting corrosion resistance in demanding outdoor environments where moisture, salt air, and weathering are constant concerns. The slender 13-gauge shank, diamond point, and checkered full round head work together to make installation faster and more reliable - whether you are attaching cedar shakes, wood shingles, or similar exterior cladding materials.

Key Features

• Type 304 Stainless Steel material - provides strong corrosion resistance for exterior siding and roofing applications exposed to moisture and outdoor elements, helping fasteners and finishes last longer without rust staining.
• Annular-ring shank - the ring pattern dramatically increases withdrawal resistance compared to smooth-shank nails, locking shakes and shingles in place securely even through seasonal wood movement.
• 7/32 in. full round head diameter - the wider bearing surface holds shakes and shingles firmly without pulling through, reducing the risk of material failure at the fastener point.
• Checkered head pattern - blends with wood grain, reduces glare from sunlight, and accepts surface finishes so fastener heads are less visually prominent on finished exteriors.
• Slender 13-gauge, 0.092 in. shank diameter - minimizes the risk of splitting thin shakes and shingles during installation, preserving material integrity.
• Diamond point tip - allows easier driving into wood with less effort, speeding up installation and reducing installer fatigue on large roofing or siding projects.
• 2-1/2 in. length (8d penny size) - provides the depth of penetration needed for proper fastening of standard shake and shingle profiles into roof decking or wall sheathing.
• Made in the United States - manufactured domestically by Simpson Strong-Tie to consistent quality standards.

Why This Product

• Purpose-built for shakes and shingles - the combination of a wide flat head, slender shank, and annular-ring shank addresses the specific challenges of fastening thin, split-prone wood materials to roof and wall substrates, reducing callbacks and rework.
• Corrosion resistance where it counts most - Type 304 stainless steel construction is well suited for exterior roofing and siding environments where standard galvanized nails may corrode prematurely, helping the fastener maintain holding strength over time.
• Enhanced holding power over smooth-shank alternatives - the annular-ring shank geometry resists nail withdrawal caused by thermal cycling and wind uplift, making this nail a more secure choice for roofing and siding than plain-shank options.
• Designed to protect the substrate - the diamond point and narrow shank profile reduce splitting stress in wood shakes and shingles during driving, helping preserve the structural and aesthetic integrity of the cladding material.

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Penny Size: 8d
• Length: 2-1/2 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
• Approximate Count Per Lb: 196
• Country of Origin: United States

Available Pack Options

• S8SN71: 1 Lb (196)
• S8SN75: 5 Lb (980)
• S8SN7B: 25 Lb (4900)

Frequently Asked Questions

What type of shank does this nail have and why does it matter for shake and shingle installation?

This nail features an annular-ring shank, which has a series of rings along the shank that grip the surrounding wood fibers. This design significantly increases withdrawal resistance compared to a smooth shank, helping keep shakes and shingles firmly attached through seasonal wood movement, wind uplift, and temperature changes common in roofing and siding applications.

Why is Type 304 stainless steel used for this shake and shingle nail?

Type 304 stainless steel provides strong resistance to corrosion from moisture and outdoor exposure - conditions that are unavoidable in roofing and exterior siding installations. Using stainless steel fasteners helps prevent rust staining on wood surfaces and maintains the structural holding power of the nail over the life of the installation.

What does the checkered head pattern on this nail do?

The checkered pattern on the full round head is designed to blend with wood grain, reduce glare from sunlight, and accept surface finishes. This makes the nail heads less visually prominent on finished shake or shingle exteriors, contributing to a cleaner appearance on the completed installation.

How does the diamond point on this nail help during installation?

The diamond point is a tapered, four-sided tip that makes it easier to start and drive the nail into wood with less resistance. This helps speed up installation and reduces the chance of the nail deflecting or requiring excessive force, which is particularly beneficial when working across large roofing or siding surfaces.

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