Simpson 1-1/4" 15 deg. Wire Coil Ring-Shank Siding Nail in Type 304 Stainless Steel by Simpson Strong-Tie is engineered for high-speed pneumatic siding installation where long-term corrosion resistance and secure fastening performance are essential. Featuring an annular-ring shank, full round head, and 15 deg. wire-coil collation, these stainless steel siding nails are purpose-built for fiber cement board applications and compatible with pneumatic tools from many major manufacturers. The combination of slender 13-gauge wire and diamond point tip makes driving smooth and precise, reducing split risk in siding materials while maintaining the holding power required to prevent board cupping over time.

Key Features

• Type 304 Stainless Steel material - delivers lasting corrosion resistance in outdoor siding applications, protecting fastener integrity even in damp or weather-exposed environments
• Annular-ring (ring-shank) shank - significantly increases withdrawal resistance compared to smooth-shank nails, creating a secure attachment that reduces cupping of siding boards over time
• 15 deg. wire-coil collation - feeds consistently through compatible pneumatic coil nailers, reducing driving force needed and dramatically increasing installation speed on large siding jobs
• Full round head with checkered pattern - provides maximum bearing surface to prevent pull-through, while the checker pattern blends with wood grain, minimizes glare from sunlight, and accepts surface finishes for a cleaner finished appearance
• Diamond point tip - enables easier driving through fiber cement and wood siding with less resistance, reducing installer fatigue during high-volume work
• 13-gauge wire and 1-1/4" length - slender profile minimizes splitting risk in siding boards while delivering proper penetration depth for secure attachment
• 0.221" head diameter with generous underhead fillet - allows nails to be driven flush or countersunk without crushing or damaging the surrounding siding material
• Made in the United States - domestic manufacturing supports consistent quality control and reliable availability for professional contractors

Why This Product

• Built for fiber cement siding installations - the annular-ring shank and diamond point are specifically suited to the demanding driving requirements of fiber cement boards, providing the holding power needed to keep panels securely in place through seasonal movement and weather exposure
• Stainless steel construction eliminates staining risk - Type 304 stainless steel resists rust streaking that can discolor siding finishes, making these nails the right choice for exterior applications where appearance and long-term performance both matter
• Pneumatic-ready wire-coil format increases jobsite efficiency - 15 deg. wire-coil collation is compatible with many major manufacturers' pneumatic tools, enabling faster fastener cycling and reduced hand fatigue compared to hand-nailing or strip nail formats
• Checkered head blends into finished siding surfaces - the head pattern reduces visible glare and accepts paint or surface finishes, making it easier to achieve a professional, low-profile result on exposed siding boards

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Length (in.): 1 1/4
• Gauge: 13
• Penny Size: 3d
• Shank Diameter (in.): 0.092
• Shank Type: Annular-Ring Shank
• Head Diameter (in.): 0.221
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Collation Angle: 15 deg.
• Collation Type: Wire Coil
• Country of Origin: United States

Available Pack Options

• S13A125SNBP: 1500 Pk
• S13A125SNC: 3600 Pk

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

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

These nails feature 15 deg. wire-coil collation and are compatible with many major manufacturers' pneumatic coil nailers designed for this collation angle and format. Always confirm your specific tool's specifications before use to ensure proper fit and safe operation.

Why is Type 304 stainless steel recommended for siding nails?

Type 304 stainless steel resists corrosion in outdoor and weather-exposed environments, preventing the rust streaking that can discolor siding finishes over time. It is well-suited for exterior siding applications, though for seaside environments or locations with higher salt or chemical exposure, Type 316 stainless steel may provide superior corrosion resistance.

What is the benefit of an annular-ring shank on a siding nail?

The annular-ring (ring-shank) design increases withdrawal resistance compared to smooth-shank nails. This means the nail holds more securely in the siding material, reducing the tendency of boards to loosen or cup over time due to seasonal movement and moisture changes.

Are these nails suitable for fiber cement board installation?

Yes. These ring-shank siding nails are specifically noted as ideal for use with fiber cement boards. The diamond point tip aids in cleaner penetration through this dense material, the full round head provides broad bearing surface to prevent pull-through, and the stainless steel construction ensures long-term durability without rust staining on the board surface.

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