Simpson 3-inch 10d Finishing Nail in 316 Stainless Steel is a premium brad-head finishing nail engineered for demanding applications where corrosion resistance is essential. Crafted from Type 316 stainless steel with an 11-gauge smooth shank, this nail is purpose-built for coastal, seaside, and high-moisture environments where standard fasteners fail prematurely. The brad-style head sits only slightly wider than the shank, allowing the nail to be countersunk and concealed for a clean, professional finish on trim, millwork, and fine carpentry. Made in the United States by Simpson, a trusted name in structural fasteners, these finishing nails deliver the durability and holding power that demanding projects require.

Key Features

• Type 316 stainless steel construction - provides superior corrosion resistance compared to 304 stainless, making it the right choice for saltwater-exposed, seaside, and chemically harsh environments where fasteners must outlast the materials they join.
• 11-gauge shank diameter (0.12 in.) - delivers solid holding strength in a slim profile, reducing the risk of splitting wood during installation while maintaining structural integrity.
• Brad head design (0.165 in. head diameter) - the narrow head is only marginally larger than the shank, allowing the nail to be driven flush and countersunk below the work surface for a virtually invisible fastening point.
• Smooth shank with diamond point - the tapered diamond point parts wood fibers cleanly for easier driving with less resistance, while the smooth shank allows controlled, consistent penetration.
• 3-inch (10d) length - provides ample penetration depth for secure fastening in trim, casing, baseboards, and finish carpentry applications where holding power and concealment both matter.
• Made in the United States - manufactured to consistent quality standards, ensuring reliable performance nail after nail across your project.

Why This Product

• Built for coastal and high-moisture environments - Type 316 stainless steel is the material of choice for seaside and salt-air applications, resisting oxidation and staining that would compromise standard galvanized or 304-grade fasteners over time.
• Finish-quality results without patching over a large head - the brad head stays close to the shank diameter, meaning less surface disruption and a smaller hole to fill when countersinking, saving time on prep and finishing work.
• A fastener that matches the lifespan of premium materials - when installing cedar, redwood, tropical hardwoods, or composite materials in outdoor or wet conditions, using 316 stainless steel nails ensures the fastener does not become the weak point in an otherwise durable installation.
• Consistent, predictable driving - the smooth shank and diamond point geometry allow clean entry with standard finishing nailers or hand-driving, reducing deflection and keeping your work surface pristine.

Specifications

• Brand: Simpson Strong-Tie
• Material/Coating: Type 316 Stainless Steel
• Gauge: 11
• Penny Size: 10d
• Length: 3 in.
• Head Diameter: 0.165 in.
• Shank Diameter: 0.12 in.
• Shank Type: Smooth Shank
• Head Type: Brad Head
• Head Pattern: Smooth Head
• Point Type: Diamond Point
• Approx. Count per Lb.: 102
• Country of Origin: United States

Available Pack Options

• T10FN1: 1 Lb (102)
• T10FNB: 25 Lb (2550)

Frequently Asked Questions

What makes Type 316 stainless steel different from standard stainless steel for nails?

Type 316 stainless steel contains molybdenum, which significantly increases its resistance to chlorides, saltwater, and industrial chemicals compared to standard 304-grade stainless. This makes 316 stainless finishing nails the preferred choice for seaside construction, coastal decking trim, and any application where exposure to salt air or moisture is a long-term concern.

Can these finishing nails be countersunk for a clean surface appearance?

Yes. The brad head design has a head diameter of only 0.165 in. - just slightly larger than the 0.12 in. shank diameter. This narrow profile makes it easy to countersink the nail below the work surface using a nail set, leaving a small hole that can be filled and finished for a smooth, professional appearance.

What does the diamond point contribute to driving performance?

The diamond point on these nails is tapered to a precise tip that parts wood fibers as it enters, rather than crushing or splitting them. Combined with the smooth shank, this allows the nail to drive cleanly and consistently, which is especially important when working near the edges of trim or molding where splitting would be visible.

Are these nails appropriate for use with cedar, redwood, or other naturally corrosive wood species?

Yes. Cedar, redwood, and similar species contain natural acids and tannins that accelerate corrosion in standard steel or even basic galvanized fasteners. Type 316 stainless steel resists these corrosive compounds effectively, ensuring the fastener remains strong and stain-free over time rather than degrading and leaving rust streaks on the finished surface.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.