Simpson 4d 1-1/2" Wood Siding Nail in Type 304 Stainless Steel is an exterior fastener engineered by Simpson Strong-Tie for securing wood siding panels with reliable holding power and long-term corrosion resistance. Featuring an annular-ring shank for maximum withdrawal resistance and a checkered full round head that blends naturally with wood grain, this nail delivers the pull-through resistance and grip strength that exterior siding installations demand. Built from Type 304 stainless steel, it provides a durable fastening solution suited for outdoor and weather-exposed environments where standard steel fasteners would deteriorate over time.

Key Features

• Annular-ring shank - increases withdrawal resistance so nails hold firmly against the natural movement and cupping of siding boards, reducing the chance of loosening over time
• Checkered full round head pattern - blends with wood grain texture and reduces glare from sunlight, while accepting surface finishes so the fastener recedes visually into the siding
• Type 304 stainless steel material and finish - resists corrosion in outdoor and moisture-exposed applications, helping exterior siding installations maintain integrity across seasons
• Diamond point tip - promotes easier driving through wood siding panels, reducing splitting risk and improving installer efficiency
• 14-gauge, 0.083" shank diameter - provides the structural thickness needed for solid engagement with siding substrates without over-penetrating thin panel materials
• 1-1/2" length (4d penny size) - sized specifically for wood siding panel fastening, offering the right depth of penetration for secure attachment without blowing through thin sheathing
• Made in the United States - manufactured domestically under Simpson Strong-Tie's quality standards for consistent dimensional accuracy and material performance

Why This Product

• The annular-ring shank design directly addresses one of the most common siding failure points - nail pull-through and loosening - by mechanically locking into wood fibers for superior withdrawal resistance compared to smooth-shank alternatives
• Type 304 stainless steel construction makes this nail appropriate for exterior siding projects exposed to rain, humidity, and temperature swings where corrosion could stain or compromise the siding surface over time
• The checkered head pattern serves a dual purpose: it minimizes visible glare on the finished facade and accepts paint or stain so the nail head integrates cleanly with the final appearance of the siding installation
• At 4d/1-1/2" with a diamond point, this nail is purpose-built for wood siding panel fastening - giving installers a fastener that drives cleanly, seats flush, and holds securely without requiring oversized or specialty tools

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Penny Size: 4d
• Length: 1-1/2 in.
• Gauge: 14
• Shank Diameter: 0.083 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Diameter: 5/32 in.
• Head Pattern: Checkered
• Point Type: Diamond Point
• Approx. Count per Lb.: 398
• Country of Origin: United States

Available Pack Options

• S4SND1: 1 Lb (398)
• S4SND5: 5 Lb (1990)
• S4SNDB: 25 Lb (9950)

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

What type of shank does this nail have, and why does it matter for wood siding?

This nail features an annular-ring shank, which is a ribbed shank profile that mechanically engages wood fibers as the nail is driven in. This design increases withdrawal resistance significantly compared to smooth-shank nails, helping prevent siding boards from cupping, shifting, or pulling away from the substrate over time.

Is Type 304 stainless steel appropriate for exterior wood siding applications?

Yes. Type 304 stainless steel provides strong corrosion resistance for outdoor and moisture-exposed environments, making it well-suited for exterior wood siding installations. For applications in coastal or seaside environments where salt air is a factor, Simpson Strong-Tie recommends considering Type 316 stainless steel nails instead, which offer superior corrosion resistance in those conditions.

What does the checkered head pattern do on a siding nail?

The checker pattern on the full round head serves two practical purposes: it reduces glare from sunlight on the nail head surface, and it accepts surface finishes such as paint or stain. This allows the nail head to blend with the wood grain of the siding, resulting in a cleaner finished appearance on the exterior facade.

How many of these nails are there approximately per pound?

There are approximately 398 nails per pound for this 4d 1-1/2" Type 304 stainless steel wood siding nail. This count is an approximation and may vary slightly in practice.

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