Simpson 2-1/2" Ring-Shank 15 deg. Wire Coil Siding Nail in Type 304 Stainless Steel is engineered by Simpson Strong-Tie for professional siding installation where holding power and long-term corrosion resistance are essential. This 8d, 13-gauge collated nail features an annular-ring shank, full round head with a checkered pattern, and a diamond point - combining installation speed with the lasting durability of 304 stainless steel. Designed specifically for fiber cement board applications, these wire coil nails are compatible with many major manufacturers' pneumatic coil nailers, making them a go-to choice for contractors and installers seeking both efficiency and performance.

Key Features

• Type 304 Stainless Steel construction - provides strong corrosion resistance for outdoor siding applications and extended service life in demanding weather conditions
• Annular-ring (ring-shank) shank design - dramatically increases withdrawal resistance compared to smooth-shank nails, keeping siding boards securely attached and reducing cupping over time
• 15 deg. wire coil collation - enables use with a wide range of pneumatic coil nailers, reducing driving force and significantly increasing installation speed on the job site
• Full round head with checkered pattern - the checkered surface blends with wood grain, reduces glare from sunlight, and accepts surface finishes for a cleaner finished appearance
• Diamond point tip - facilitates easier penetration into fiber cement boards and wood siding, reducing splitting and driving effort
• Slender 13-gauge, 0.092" shank diameter - minimizes material damage during fastening while still providing reliable holding strength in siding substrates
• Ideal for fiber cement boards - engineered to meet the fastening requirements of fiber cement siding products, ensuring compatibility and code-appropriate performance
• Made in the United States - produced domestically by Simpson Strong-Tie to consistent quality standards

Why This Product

• Built for fiber cement siding - the combination of ring-shank holding power and 304 stainless steel makes this nail specifically suited for fiber cement board installation, where both fastener strength and corrosion resistance are critical for long-term performance
• Speed and efficiency on the job - the 15 deg. wire coil format lets contractors load and drive nails rapidly with pneumatic tools, cutting labor time compared to hand-nailing or strip-nail alternatives
• Corrosion resistance where it matters - Type 304 stainless steel stands up to outdoor moisture exposure and the chemical environment of fiber cement products, protecting the fastener and the siding installation over the long term
• Reduced callbacks from siding movement - the annular-ring shank provides superior withdrawal resistance, helping to prevent siding boards from loosening, cupping, or shifting after installation

Specifications

• Brand: Simpson Strong-Tie
• Length: 2-1/2 in.
• Penny Size: 8d
• Gauge: 13
• Shank Diameter: 0.092 in.
• Head Diameter: 0.221 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Collation Type: Wire Coil
• Collation Angle: 15 deg.
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Country of Origin: United States

Available Pack Options

• S13A250SNBP: 900 Pk
• S13A250SNC: 3600 Pk

Approved Applications

• Fastening Wood Siding
• Fiber cement board installation

Frequently Asked Questions

What type of nailer is compatible with these 15 deg. wire coil siding nails?

These nails use a 15 deg. wire coil collation format, which is compatible with many major manufacturers' pneumatic coil nailers. Always verify your specific tool's compatibility with 15 deg. wire coil nails before use.

Why is Type 304 stainless steel used for siding nails rather than a standard galvanized finish?

Type 304 stainless steel offers strong corrosion resistance, making it well-suited for outdoor siding applications where the fastener is exposed to moisture and weather over time. It also provides compatibility with fiber cement board materials, which can react adversely with certain coatings. For seaside or highly corrosive environments, a Type 316 stainless steel fastener would offer superior corrosion resistance.

What makes a ring-shank nail better than a smooth-shank nail for siding?

The annular-ring shank increases withdrawal resistance significantly compared to a smooth-shank nail. This means the fastener holds more firmly in the substrate over time, reducing the risk of siding boards loosening, cupping, or pulling away from the framing - providing a more secure long-term attachment.

Are these siding nails suitable for use in fiber cement board products?

Yes. These nails are specifically identified as ideal for use in fiber cement boards. The diamond point facilitates easier driving into the material, the slender 13-gauge shank minimizes splitting, and the Type 304 stainless steel finish is appropriate for the chemical environment of fiber cement siding products.

Note: Product dimensions and/or thread length may differ from picture.