Simpson 3d Wood Siding Nail in 1-1/4" Length, 304 Stainless Steel by Simpson Strong-Tie is engineered specifically for fastening wood siding panels with reliable holding power and long-term corrosion resistance. Featuring an annular-ring shank for superior withdrawal resistance and a checker-patterned full round head that blends naturally with wood grain, this nail delivers a secure, low-profile attachment that helps maintain the structural integrity and appearance of exterior siding installations. The 14-gauge, 304 stainless steel construction makes it a dependable choice for outdoor fastening applications where moisture exposure and surface finish compatibility matter.

Key Features

• Type 304 Stainless Steel material - provides strong corrosion resistance for exterior and outdoor siding applications, helping fasteners hold up over time against moisture and weathering
• Annular-ring shank - dramatically increases withdrawal resistance compared to smooth-shank nails, reducing cupping of siding boards and keeping panels firmly secured
• Checkered full round head pattern - blends with wood grain for a cleaner, lower-glare finish, and accepts surface coatings so the fastener integrates visually with the siding material
• Diamond point tip - allows for easier driving into wood siding, reducing installation effort and minimizing splitting risk
• 14-gauge shank at 0.083" diameter - delivers solid pull-through resistance without being oversized, striking a balance between holding strength and minimal wood disruption
• 1-1/4" length (3d penny size) - sized appropriately for wood siding panel fastening, providing adequate penetration depth for a secure attachment
• Made in the United States - manufactured domestically to Simpson Strong-Tie quality standards

Why This Product

• Engineered for wood siding performance - the combination of an annular-ring shank and full round head addresses the two most common siding fastener failure modes: nail withdrawal and panel pull-through, making this nail a purpose-built solution rather than a general-purpose fastener
• Corrosion-resistant 304 stainless steel finish - ideal for exterior siding environments where standard steel fasteners would corrode over time, helping maintain the appearance and structural integrity of the siding installation
• Checker-pattern head reduces glare and accepts finishes - unlike plain-head nails, the checkered head surface reduces sunlight glare and holds paint or stain, so the nail blends into the finished look of the siding rather than standing out
• Trusted Simpson Strong-Tie exterior nail line - Simpson Strong-Tie designs these nails specifically to support exterior living spaces with the same durability expected from structural interior applications, giving contractors and builders a reliable fastener from a recognized name in construction hardware

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Gauge: 14
• Penny Size: 3d
• Length: 1-1/4 in.
• Head Diameter: 5/32 in.
• Shank Diameter: 0.083 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Approx. Count Per Lb: 495
• Country of Origin: United States

Available Pack Options

• S3SND1: 1 Lb (495)
• S3SND5: 5 Lb (2475)
• S3SNDB: 25 Lb (12375)

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

Why is an annular-ring shank important for wood siding nails?

The annular-ring shank features ridges along the nail shaft that grip the wood fibers much more aggressively than a smooth shank. This increased withdrawal resistance helps prevent the nail from backing out over time, which in turn reduces cupping or warping of the siding boards and keeps panels firmly attached to the structure.

What does the checkered head pattern on this nail do?

The checker pattern on the full round head serves two practical purposes: it reduces glare from direct sunlight, which can be distracting on finished exterior surfaces, and the textured surface accepts paints, stains, and other surface finishes more readily than a smooth head - helping the nail blend in with the surrounding wood siding rather than standing out visually.

Is Type 304 stainless steel appropriate for coastal or seaside siding installations?

Type 304 stainless steel provides solid corrosion resistance for standard outdoor and moisture-exposed environments. However, for seaside or coastal applications where exposure to salt air and saltwater is a concern, Simpson Strong-Tie recommends Type 316 stainless steel nails, which offer superior corrosion resistance in those more demanding conditions.

What is the approximate nail count per pound for this 3d wood siding nail?

This 1-1/4", 14-gauge, 3d stainless steel wood siding nail has an approximate count of 495 nails per pound, which can be a helpful reference when estimating the quantity needed for a wood siding fastening project.

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