The Simpson 3-1/4" 12d Finishing Nail in Type 304 Stainless Steel delivers lasting performance in demanding environments where corrosion resistance is essential. Engineered with an 11-gauge smooth shank and a brad head that sits only slightly larger than the shank diameter, these finishing nails are purpose-built for clean, professional results. The brad head design allows for easy countersinking below the work surface, leaving a near-invisible fastener point that requires minimal filling or finishing work. Manufactured in the United States, these 25-lb box nails represent a premium fastening solution for projects where longevity and aesthetics matter equally.

Key Features

• Type 304 Stainless Steel Construction - Provides superior resistance to corrosion, ensuring fasteners last as long as the materials they secure in demanding environments.
• Brad Head Design - The head is only slightly larger than the shank, allowing for a less-visible appearance once driven and finished.
• Smooth Shank with Diamond Point - Facilitates easier driving and consistent penetration into the work surface.
• Countersink-Ready - Engineered to be easily concealed by countersinking below the work surface for a clean, professional finish.
• 11-Gauge Construction - Offers a strong, reliable hold appropriate for finish-grade applications.
• 25-Lb Box (Approx. 2,425 Nails) - A generous quantity for larger projects and professional use.
• Made in the United States - Domestically manufactured for consistent quality standards.

Specifications

• Model Number: S12FNB
• Material / Coating: Type 304 Stainless Steel
• Gauge: 11
• Penny Size: 12d
• Length: 3-1/4 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
• Approximate Count: 2,425 nails per 25-lb box
• Package Weight: 25 lb
• Country of Origin: United States

Approved Applications

• Interior and exterior finish carpentry requiring concealed fasteners
• Trim, molding, and millwork installation in corrosive or high-moisture environments
• Wood siding, fascia, and soffit installation where stainless steel fasteners are specified
• Projects demanding fasteners that will not stain or bleed through painted or stained surfaces
• Any application where longevity in corrosive environments is a primary concern

What's Included

• 25 lb box of Simpson Type 304 Stainless Steel 12d Finishing Nails (approx. 2,425 nails), Model S12FNB

Frequently Asked Questions

What type of stainless steel are these finishing nails made from, and why does it matter?

These nails are made from Type 304 stainless steel, which provides superior corrosion resistance. This makes them well suited for applications in demanding environments where standard steel fasteners would rust or degrade over time, ensuring the fasteners last as long as the materials they secure.

What gauge are these nails, and how many come in a 25-lb box?

These finishing nails are 11-gauge and measure 3-1/4" in length, corresponding to a 12d size. A 25-lb box contains approximately 2,425 nails, making it a practical quantity for larger projects and professional use.

Can these nails be countersunk for a clean finish?

Yes. These nails feature a brad head design, meaning the head is only slightly larger than the shank diameter. This allows the nail to be easily countersunk below the work surface, leaving a near-invisible fastener point that requires minimal filling or finishing work for a clean, professional result.

What shank and point style do these finishing nails have?

These nails feature a smooth shank with a diamond point. The smooth shank and diamond point work together to facilitate easier driving and consistent penetration into the work surface, which is especially important in finish-grade applications where precision matters.