The Simpson 2-1/2 in. x.092 316 SS Ring-Shank 15 deg. Wire Coil Siding Nail Black is a professional-grade fastener purpose-built for fiber cement board siding installation. Manufactured from Type 316 stainless steel with a black finish, this 13-gauge, full-round-head coil nail combines superior corrosion resistance with reliable holding power - making it a dependable choice for coastal construction, high-moisture environments, and any project where long-term fastener integrity is non-negotiable.

Key Features

• Type 316 Stainless Steel Construction - delivers enhanced resistance to salt air, moisture, and corrosion compared to standard stainless grades, keeping fasteners secure and stain-free in demanding coastal and exterior environments.
• Annular Ring Shank - the ring shank profile locks aggressively into fiber cement board, resisting withdrawal and helping prevent board cupping over the life of the installation.
• 15 deg. Wire Coil Collation - compatible with pneumatic coil nailers from major manufacturers, enabling fast, consistent drives and reducing downtime on large siding jobs.
• Full Round Head with Checkered Pattern - promotes flush and countersunk nail drives without crushing the surrounding board surface, producing clean, professional results on finished siding.
• Diamond Point Tip - allows the nail to penetrate fiber cement cleanly and accurately, reducing the risk of surface cracking or splitting during installation.
• 13-Gauge Slender Profile - sized specifically for fiber cement siding applications, striking the right balance between holding strength and minimal board disruption.
• Black Finish - provides a low-visibility appearance at the nail head, giving installed siding a cleaner, more finished look against dark or painted board surfaces.

Why This Product

• Built for Coastal and High-Moisture Projects - Type 316 stainless steel is the recommended material for seaside construction where salt air and humidity accelerate corrosion in standard fasteners, making this nail a smart long-term investment for exposed exterior applications.
• Engineered Specifically for Fiber Cement Siding - the combination of a diamond point, annular ring shank, and slender 13-gauge body addresses the unique demands of fiber cement installation, reducing cupping risk and ensuring a secure, lasting hold without damaging the board.
• Pneumatic-Ready for High-Volume Work - the 15 deg. wire coil collation format integrates directly with widely used pneumatic coil nailers, allowing crews to drive nails quickly and consistently across large-scale siding projects.
• Professional Finish Right Out of the Box - the checkered full-round head, black coating, and flush-drive capability work together to minimize visible hardware on the finished surface, supporting a clean aesthetic without extra finishing steps.

Specifications

• Model Number (MPN): T13A250SNJB
• Coating / Material: Type 316 Stainless Steel
• Color: Black
• Gauge: 13
• Penny Size: 8d
• Length: 2-1/2 in.
• Head Diameter: 0.221 in.
• Shank Diameter: 0.092 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Collation Type: 15 deg. Wire Coil
• Packaging Quantity: 1,800 nails per pack

Approved Applications

• Fiber cement board siding installation
• Seaside and coastal construction environments requiring superior corrosion resistance
• Applications requiring flush or countersunk nail drives without wood crushing
• Projects utilizing pneumatic coil nailers from major manufacturers
• Siding applications where board cupping resistance is critical

What's Included

• 1,800 x Simpson 2-1/2" x .092 Black Ring-Shank 15 deg. Wire Coil Siding Nails, Type 316 Stainless Steel (Model T13A250SNJB)

Frequently Asked Questions

What type of siding is this nail designed for?

This nail is specifically designed for fiber cement siding applications. Its annular ring shank, slender 13-gauge profile, and diamond point work together to provide reliable, long-lasting fastening in fiber cement boards while reducing the risk of cupping over time.

Why is Type 316 stainless steel recommended for siding nails?

Type 316 stainless steel offers superior corrosion resistance compared to standard stainless grades, making these nails an excellent choice for seaside and high-moisture environments where exposure to salt air or water could cause lesser fasteners to corrode and fail prematurely.

What collation angle and style are these nails, and will they work with my coil nailer?

These nails are collated at a 15 deg. wire-coil angle. Before use, confirm that your coil nailer is compatible with 15 deg. wire-coil collated nails, as nailers are designed to accept specific collation angles and styles. Using an incompatible nailer can result in misfires or tool damage.

How many nails are included in one pack, and what are the nail dimensions?

Each pack contains 1,800 nails. The nails measure 2-1/2 inches in length with a .092-inch (13-gauge) shank diameter, and feature a full-round head with a checkered pattern and a diamond point tip.