Simpson 5d 1-3/4 in. 14-Gauge Type 316 Stainless Steel Finishing Nails are engineered for finish carpentry and trim work where a concealed fastener result and long-term corrosion resistance are both non-negotiable. Type 316 stainless steel provides superior protection against corrosion compared to standard stainless grades, making these finishing nails especially well-suited for coastal construction, high-humidity environments, and any project where fastener longevity must match or exceed that of the materials being joined. The brad head design allows each nail to be countersunk and hidden below the work surface with minimal effort, delivering the clean, polished look that interior and exterior trim and millwork demand.

Key Features

• Type 316 stainless steel construction - delivers superior corrosion resistance in seaside, high-humidity, and other highly corrosive environments, so fasteners hold up as long as the materials they secure
• Brad head design - sits only slightly larger than the shank, allowing the nail to be countersunk below the work surface and concealed with minimal filler, ideal for finish carpentry and detail woodworking where appearance matters
• 14-gauge smooth shank - provides consistent, clean driving into a variety of materials while maintaining the holding integrity expected in trim and molding applications
• Diamond point tip - promotes accurate placement and reduces splitting when driving into trim, molding, and millwork where precision is critical
• 5d penny size at 1-3/4 in. length - a versatile dimension suited to interior and exterior trim installation, finish carpentry, and anywhere a shorter finishing nail is the right call
• Smooth head pattern - leaves a minimal surface impression, reducing the effort needed to achieve a clean, paint- or stain-ready finish
• Made in the United States by Simpson - reflects consistent manufacturing quality from a brand with a well-established presence in structural and finish fastening

Why This Product

• Purpose-built for coastal and corrosive environments - Type 316 stainless steel is the specification of choice when standard stainless grades fall short, making these nails a dependable solution for seaside projects and high-humidity finish work where rust and fastener failure are real concerns
• Truly concealable finish result - the brad head sits close to the shank diameter, so countersinking and concealing each nail is straightforward, giving trim, molding, and millwork the clean look the work requires without excessive patchwork
• Matched to demanding finish carpentry applications - the combination of smooth shank, diamond point, and 14-gauge thickness means these nails drive accurately and hold reliably in the precise, detail-oriented work where finishing nails earn their keep
• Domestic production from Simpson - these nails are produced in the United States by a recognized name in fastening, offering confidence in dimensional consistency and material quality across every nail in the box

Specifications

• Model Number: T5FN1
• Material / Coating: Type 316 Stainless Steel
• Gauge: 14
• Penny Size: 5d
• Length: 1-3/4 in.
• Head Diameter: 0.12 in.
• Shank Diameter: 0.083 in.
• Shank Type: Smooth Shank
• Head Type: Brad Head
• Head Pattern: Smooth Head
• Point Type: Diamond Point
• Approximate Count (1 lb.): 375
• Country of Origin: United States

Approved Applications

• Interior and exterior trim and molding installation requiring a concealed fastener finish
• Finish carpentry and millwork in coastal or high-humidity environments
• Seaside construction projects where Type 316 stainless steel's superior corrosion resistance is essential
• Any application where fastener longevity must match or exceed that of the materials being joined
• Detail woodworking where a brad head nail can be countersunk and hidden below the work surface

What's Included

• 1 lb. of Simpson T5FN1 1-3/4" 5d Type 316 Stainless Steel Finishing Nails (approximately 375 nails per pound)

Frequently Asked Questions

Why is Type 316 stainless steel recommended for coastal or corrosive environments?

Type 316 stainless steel offers superior corrosion resistance compared to standard stainless grades, making it especially well-suited for seaside and other highly corrosive environments where long-term fastener integrity is essential. These nails are engineered to last as long as the materials they fasten, even under harsh conditions.

What does the brad head design offer compared to a standard nail head?

The brad head on these finishing nails is only minimally larger than the shank itself, which allows the nail to be countersunk below the work surface and concealed with minimal effort. This makes them ideal for trim, molding, and detail work where a discreet, polished appearance is required.

What are the key specifications of the Simpson T5FN1 finishing nail?

These finishing nails are 1-3/4" in length, designated as 5d, and manufactured to 14-gauge thickness. They feature a smooth shank, a diamond point for easier and more precise driving, and a smooth head pattern that provides a flush, clean finish at the surface.

Where are these finishing nails manufactured?

The Simpson T5FN1 finishing nails are made in the United States, reflecting domestic manufacturing for consistent quality.