Simpson 3-inch, 11-gauge finishing nail in Type 304 stainless steel is built for trim, millwork, and finish carpentry where long-term durability and a clean, low-profile appearance are essential. Crafted by Simpson and made in the United States, this 10d finishing nail features a brad head, smooth shank, and diamond point - delivering a combination that drives cleanly, holds securely, and can be easily concealed below the work surface for a polished result.

Key Features

• Type 304 stainless steel construction - resists corrosion and rust in damp, humid, or chemically active environments, extending the service life of the fastener alongside the materials it holds
• Brad head design - the head is only slightly larger than the shank, making it easy to countersink and conceal for a finished, professional appearance in trim and finish work
• Smooth shank with diamond point - the tapered diamond tip reduces splitting in trim stock while the smooth shank allows consistent, controlled driving with minimal resistance
• 11-gauge, 3-inch length (10d penny size) - provides substantial holding power for baseboards, door casing, crown molding, and other finish carpentry applications requiring a longer nail
• Countersinkable below the work surface - allows the nail head to be set and filled flush, eliminating visible fasteners for clean interior and exterior finish results
• Made in the United States - consistent dimensional quality and material standards you can rely on across the full range of finishing applications

Why This Product

• Stainless steel where it matters most - ordinary steel finishing nails can bleed rust stains through paint and wood finishes over time; 304 stainless eliminates that risk, keeping finished surfaces clean and intact in corrosive or moisture-prone environments
• The right nail for finish work - the 10d, 3-inch length hits the sweet spot for attaching thicker trim boards and casing without over-penetrating, while the brad head keeps the fastener nearly invisible once set
• A durable upgrade over standard nails - when the materials being fastened are premium hardwoods, composite trim, or exterior finish boards, using stainless steel fasteners ensures the fastener doesn't become the weakest point in the assembly
• Trusted Simpson quality - Simpson is a recognized name in structural and finish fasteners, and this nail is manufactured in the United States to consistent gauge and dimensional tolerances

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 304 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

• S10FN1: 1 Lb (102)
• S10FN5: 5 Lb (510)
• S10FNB: 25 Lb (2550)

Frequently Asked Questions

What is the difference between Type 304 and Type 316 stainless steel for finishing nails?

Type 304 stainless steel offers excellent corrosion resistance for most interior and many exterior applications in humid or mildly corrosive environments. Type 316 stainless steel provides superior resistance to chlorides and salt, making it the preferred choice for seaside or coastal applications where salt air or saltwater exposure is a regular concern. For most inland and non-coastal finish carpentry, 304 stainless is a durable and cost-effective choice.

Can these nails be used for exterior trim work?

Yes. The Type 304 stainless steel construction makes these finishing nails well-suited for exterior trim applications where moisture exposure, humidity, or mild corrosive conditions are present. They resist rust and staining, which helps maintain the appearance of painted or stained exterior trim over time. For direct seaside exposure, consider upgrading to Type 316 stainless for superior salt-air resistance.

How do I conceal the nail head after driving?

The brad head on these finishing nails is designed to be countersunk slightly below the surface of the wood using a nail set. Once the head is set below the surface, the small hole can be filled with wood filler, putty, or caulk and sanded smooth before painting or finishing - leaving no visible fastener on the completed surface.

What is the penny size designation "10d" and what does it mean for my project?

The "10d" designation is a traditional nail sizing term indicating a 10-penny nail, which corresponds to a 3-inch length in this case. This length is commonly used for attaching thicker trim boards, door and window casing, baseboards, and crown molding where a longer nail is needed to reach through the finish material and into the underlying framing or substrate for a secure hold.

Note: Product dimensions may differ from picture. Please refer to the specifications listed above for accurate dimensions.