Simpson 6d 2" Fiber-Cement Siding Nail in Type 316 Stainless Steel by Simpson Strong-Tie is a purpose-built fastener designed expressly for attaching lap and panel siding materials made of fiber-cement composites. With an annular-ring shank for superior holding power and a full round head with checkered pattern, this nail delivers a secure, long-lasting connection in demanding exterior applications - including coastal and high-humidity environments where corrosion resistance is critical. Simpson Strong-Tie's exterior fastener lineup is engineered to help outdoor living spaces last as long as the interior of a home, and this fiber-cement siding nail is no exception.

Key Features

• Type 316 Stainless Steel material - provides superior corrosion resistance in saltwater, coastal, and chemically exposed environments, making it the right choice for seaside and high-moisture siding installations
• Annular-ring shank - increases withdrawal resistance significantly compared to smooth-shank nails, so siding panels stay securely attached over time even through seasonal expansion and contraction
• Full round head, 9/32" diameter - delivers broad bearing surface against fiber-cement panels, reducing the risk of pull-through and creating a clean, stable fastening point
• Checkered head pattern - blends with faux wood grain textures common in fiber-cement siding, reduces glare from sunlight, and accepts surface finishes so nail heads remain low-profile after painting or staining
• Diamond point - enables easier driving through dense fiber-cement composite material, reducing installation effort and minimizing surface cracking
• 11-gauge, 0.120" shank diameter at 2" length - sized specifically for fiber-cement siding thickness to achieve proper embedment without overdriving
• Made in the United States - manufactured to consistent quality standards for professional and contractor use

Why This Product

• Fiber-cement siding demands a nail engineered for its unique density and composite structure - this fastener is designed expressly for lap and panel fiber-cement applications, not a general-purpose substitute
• The Type 316 stainless steel construction goes beyond standard corrosion resistance, making this nail appropriate for coastal, seaside, and other harsh exterior environments where lower-grade fasteners would fail prematurely
• The annular-ring shank actively works against pullout forces - critical in siding applications exposed to wind loads and thermal movement - providing a more secure attachment than smooth or screw-shank alternatives
• The checkered full round head is engineered to work with the surface aesthetics of fiber-cement products, allowing paint or finish to adhere to nail heads so the final appearance of the siding installation remains clean and professional

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 6d
• Length: 2 in.
• Gauge: 11
• Shank Diameter: 0.120 in.
• Head Diameter: 9/32 in.
• Head Type: Full Round Head
• Head Pattern: Checkered
• Shank Type: Annular-Ring Shank
• Point Type: Diamond Point
• Material/Finish: Type 316 Stainless Steel
• Approx. Count Per Lb: 144
• Country of Origin: United States

Available Pack Options

• T6PCS1: 1 Lb (144)
• T6PCS5: 5 Lb (720)
• T6PCSB: 25 Lb (3600)

Approved Applications

• Fastening Fiber-Cement Siding

Frequently Asked Questions

Why is Type 316 stainless steel recommended for fiber-cement siding fasteners?

Type 316 stainless steel offers a higher level of corrosion resistance than standard 304 stainless or galvanized options, making it particularly well-suited for seaside applications, coastal climates, and any exterior installation where moisture, salt air, or chemical exposure is a concern. For fiber-cement siding - which is a long-term exterior product - using a corrosion-resistant fastener helps ensure the connection remains structurally sound for the life of the siding.

What is the advantage of an annular-ring shank over a smooth shank for siding installation?

The annular-ring shank features ring-shaped ridges along the nail's shank that grip the surrounding material and dramatically increase withdrawal resistance. In siding applications, where panels are subject to wind pressure, thermal expansion, and contraction cycles over many years, the annular-ring shank helps prevent nails from backing out and keeps panels firmly secured to the structure.

What does the checkered head pattern do on this fiber-cement siding nail?

The checkered pattern on the full round head is engineered to blend with the faux wood grain texture commonly found on fiber-cement siding products. It also reduces glare from direct sunlight and allows surface finishes such as paint or stain to adhere to the nail head - helping the final installation achieve a consistent, finished appearance.

Is this nail designed specifically for fiber-cement siding or can it be used for other applications?

This nail is designed expressly for fastening lap and panel siding materials made of fiber-cement composites. Its combination of gauge, length, diamond point, annular-ring shank, and Type 316 stainless steel finish are all selected to work with the specific characteristics of fiber-cement siding materials. For best results, it should be used as intended for fiber-cement siding applications.