Simpson 1-3/4" 5d Finishing Nail in 304 Stainless Steel is a premium 14-gauge brad-head nail engineered for trim, millwork, and finish carpentry applications where a clean, concealed fastener is essential. Crafted from Type 304 stainless steel, these finishing nails resist corrosion in demanding environments, making them a dependable long-term solution wherever standard steel fasteners would fail over time. The slim brad head sits only slightly larger than the shank, allowing the nail to be countersunk below the work surface and filled for a nearly invisible finish - ideal for interior and exterior finish work alike.

Key Features

• Type 304 Stainless Steel construction - delivers corrosion resistance in humid, damp, and chemically active environments, extending the life of the fastener to match the longevity of the materials it secures
• 14-gauge wire diameter (0.083" shank diameter) - provides a strong, reliable hold while keeping the nail profile slender enough for clean finish work without splitting trim or millwork
• Brad head design (0.12" head diameter) - the head is only marginally larger than the shank, so the nail can be countersunk and concealed easily, leaving a near-invisible surface after filling
• Smooth shank - allows the nail to drive cleanly and consistently into wood, reducing resistance and minimizing surface tearout on delicate finish materials
• Diamond point tip - the tapered point self-starts on driving, helping guide the nail accurately into the workpiece with less effort and fewer misdirected strikes
• 1-3/4" length (5d penny size) - a practical, versatile length suited to attaching trim boards, molding, casing, and other finish elements to framing or substrate
• Made in the United States - domestic production supports consistent material quality and dimensional accuracy across each nail

Why This Product

• Finish carpentry requires fasteners that disappear into the work - the brad head and smooth shank on these 5d nails make countersinking straightforward, so the nail can be set below the surface and concealed with filler for a professional result
• In applications where moisture, humidity, or corrosive conditions are present, Type 304 stainless steel resists rust and degradation where plain steel or electroplated nails would corrode and stain the surrounding material over time
• The diamond point and smooth shank work together to reduce splitting risk in thin trim pieces and fragile molding profiles, giving installers better control and fewer wasted pieces
• Simpson is a trusted name in structural and finish fasteners - these nails are made in the United States to consistent dimensional standards, giving confidence in gauge, length, and head size from nail to nail

Specifications

• Brand: Simpson Strong-Tie
• Coating/Material: Type 304 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
• Approx. Count per Lb.: 375
• Country of Origin: United States

Available Pack Options

• S5FN1: 1 Lb (375)
• S5FNB: 25 Lb (9375)

Frequently Asked Questions

What is the difference between a brad head nail and a standard finishing nail?

A brad head nail has a head that is only slightly larger than the shank - in this case, 0.12 in. compared to a 0.083 in. shank diameter. This minimal head profile allows the nail to be countersunk easily below the work surface and concealed with filler, making it preferable for trim, casing, and molding where a clean, paint-ready surface is the goal.

Is Type 304 stainless steel suitable for exterior or coastal applications?

Type 304 stainless steel provides strong corrosion resistance and is well suited to many outdoor and moisture-prone environments. However, for seaside or coastal applications where salt air and saltwater exposure are ongoing concerns, Type 316 stainless steel - which offers superior resistance to chloride environments - is the recommended upgrade.

What does the diamond point on these nails do?

The diamond point is a tapered, multi-sided tip that helps the nail self-start when driven, guiding it more accurately into the workpiece. This reduces the risk of the nail skating across the surface before it sets, and it minimizes splitting in the surrounding wood - particularly important when fastening thin trim profiles or delicate molding.

How many of these nails are there per pound?

There are approximately 375 nails per pound for this 1-3/4 in. 14-gauge brad head nail. This count can help when estimating quantities needed for larger trim or finish carpentry projects.

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