Simpson 15 deg. Wire Coil Ring-Shank Nail 2-1/2 in. x.092 in. 304 SS Redwood is a collated fastener from Simpson engineered for fast, reliable installation in wood siding and trim applications. Built from Type 304 stainless steel, this 8d nail pairs lasting corrosion resistance with a redwood painted finish that keeps nail heads discreet against siding material. The annular ring shank grips wood firmly to resist withdrawal and minimize board cupping, while the wire-coil collation at 15 deg. keeps installation moving quickly with compatible pneumatic nailers from many major manufacturers.

Key Features

• Type 304 stainless steel construction - provides high-level corrosion resistance, protecting against rust staining and fastener failure in exterior siding and trim installations exposed to moisture over time.
• Annular ring shank - increases withdrawal resistance to deliver a secure attachment that reduces cupping of siding boards, keeping boards flat and tight as wood expands and contracts with seasonal changes.
• Durable redwood painted finish - helps heads blend with siding material so fasteners stay visually inconspicuous in finished installations.
• Checkered head pattern - blends with wood grain, reduces glare from sunlight, and accepts surface finishes for a cleaner look after installation.
• Slender 13-gauge shank and diamond point - allow easier driving with less resistance, reducing splitting risk and driver fatigue during high-volume siding work.
• Full round head design - provides a broad bearing surface for reliable holding strength and consistent flush seating against siding material.
• 15 deg. wire-coil collation - compatible with many major manufacturers' pneumatic tools, enabling faster load cycles and higher installation efficiency compared to hand-driving individual fasteners.

Why This Product

• Speed and durability in one fastener - the wire-coil collation and diamond point combine short-term installation efficiency with the long-term performance of stainless steel, making this nail a practical choice for professional siding crews who cannot afford callbacks from rust staining or fastener pull-through.
• Finish that disappears into the work - the redwood painted head paired with a checkered pattern means fasteners blend naturally into siding rather than standing out, delivering a cleaner finished appearance without additional touch-up steps.
• Grip that holds through seasonal movement - the annular ring shank resists withdrawal as wood siding naturally moves with humidity and temperature shifts, reducing the board cupping and loosening that smooth-shank nails are prone to over time.
• Made in the United States by a trusted fastener brand - Simpson backs this collated nail with the engineering standards and quality control associated with its broader line of structural fasteners, giving contractors confidence in consistent performance across large siding and millwork projects.

Specifications

• MPN: S13A250CCR
• Brand: Simpson Strong-Tie
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Gauge: 13
• Penny Size: 8d
• Length: 2-1/2 in.
• Head Type: Full Round Head
• Head Pattern: Checkered
• Head Diameter: 0.221 in.
• Shank Type: Annular-Ring Shank
• Shank Diameter: 0.092 in.
• Point Type: Diamond Point
• Collation Type: Wire Coil
• Collation Angle: 15 deg.
• Color: Redwood
• Packaging Quantity: 3,600
• Country of Origin: United States

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

What type of steel are these nails made from, and why does it matter for siding applications?

These nails are made from Type 304 stainless steel, which provides high-level corrosion resistance. This is particularly important for exterior siding applications where fasteners are continuously exposed to moisture and the elements, helping to prevent rust staining and premature fastener failure over time.

Why is the annular ring shank beneficial for wood siding installation?

The annular ring shank increases withdrawal resistance to provide a secure attachment that reduces cupping of siding boards. This means the nails grip the wood more firmly than smooth-shank nails, keeping siding boards flat and tightly secured even as wood naturally expands and contracts with changes in humidity and temperature.

What do the redwood color and checkered head pattern offer in a finished siding installation?

The durable painted redwood finish helps heads blend with siding material for a cleaner, less conspicuous appearance. The checker pattern on the heads blends with wood grain, reduces glare from sunlight, and accepts surface finishes, making the nail heads far less noticeable once the siding installation is complete.

Are these nails compatible with pneumatic coil nailers from major tool brands?

Yes. These 15 deg. wire-coil nails are compatible with many major manufacturers' pneumatic tools. The wire-coil collation format and 15 deg. angle are widely supported across professional-grade coil nailers, enabling fast, efficient driving that reduces installation time on large siding projects. Each package contains 3,600 nails to keep production moving.

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