Simpson 16d x 3-1/2" Redwood Painted Siding Nail in Type 304 Stainless Steel is a premium-quality fastener engineered specifically for cedar, redwood, and cypress wood siding applications. Built from Type 304 stainless steel for lasting corrosion resistance, this nail features a redwood-painted full round head with a distinctive checkered pattern that blends naturally with wood grain and siding texture. The annular-ring shank delivers superior holding strength, while the slender 11-gauge body and diamond point allow for smooth, controlled driving with minimal splitting risk - making it a trusted choice for professional siding installations.

Key Features

• Type 304 Stainless Steel material - provides strong corrosion resistance for exterior siding environments and long-term durability in outdoor conditions
• Redwood painted head finish - helps the nail head blend seamlessly with redwood, cedar, and cypress siding so fasteners remain visually discreet after installation
• Checkered head pattern - mimics the natural texture of wood grain so the fastener head integrates into the siding surface rather than standing out
• Annular-ring shank - increases withdrawal resistance to create a secure, long-lasting attachment that resists loosening caused by wood movement and seasonal expansion
• 11-gauge slender body with diamond point - enables easier driving and reduces the risk of splitting delicate siding materials like redwood and cedar
• Full round head, 1/4 in. diameter - distributes fastening load over a broader surface area to help prevent siding panels from pulling through or cracking around the fastener
• 16d penny size at 3-1/2 in. length - provides the penetration depth needed to secure siding panels firmly through sheathing into structural framing

Why This Product

• Designed specifically for cedar, redwood, and cypress siding - these species require a fastener that resists the naturally occurring tannins and acids that can cause staining or corrosion with lesser steel grades, making Type 304 stainless steel an appropriate material choice for these applications
• The combination of a redwood-painted head and a checkered surface pattern means the fastener visually disappears into the siding, preserving the clean aesthetic of a finished wood siding installation without visible metal contrast
• The annular-ring shank design resists nail pop-back over time, helping siding panels remain tight and flat against the wall even as the wood expands and contracts through changing seasons and moisture levels
• Made in the United States by Simpson, a brand widely recognized in the structural fastener industry - offering confidence in dimensional consistency and material quality for exterior siding projects

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Color: Redwood
• Penny Size: 16d
• Length (in.): 3 1/2
• Gauge: 11
• Shank Diameter (in.): 0.120
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Diameter (in.): 1/4
• Head Pattern: Checkered
• Point Type: Diamond Point
• Approx. Count per Lb: 88
• Country of Origin: United States

Available Pack Options

• S16SNDR1: 1 Lb (88)
• S16SNDR5: 5 Lb (440)
• S16SNDRB: 25 Lb (2200)

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

Why is Type 304 stainless steel recommended for cedar, redwood, and cypress siding?

Cedar, redwood, and cypress contain natural oils and acids that can react with lower-grade fasteners, causing staining on the siding surface and accelerating corrosion of the nail itself. Type 304 stainless steel offers corrosion resistance that holds up in these chemically active wood environments, helping to maintain the appearance and integrity of the siding installation over time.

What does the annular-ring shank do compared to a smooth shank nail?

The annular-ring shank features rings along the shank that grip the wood fibers as the nail is driven in, significantly increasing withdrawal resistance compared to a smooth shank. This means the nail resists being pulled back out - an important quality for siding that experiences repeated wood movement due to moisture and temperature changes throughout the year.

Is this nail compatible with Type 316 stainless steel applications near the coast?

This nail is made from Type 304 stainless steel, which is well-suited for most exterior siding applications. For seaside or marine environments where exposure to salt air and moisture is significantly higher, Type 316 stainless steel is generally the preferred choice for superior corrosion resistance. Consider the specific environmental conditions of your project when selecting the appropriate grade.

Are hammer caps recommended when using painted-head nails like this one?

Yes - when driving painted-head nails, hammer caps are recommended to help protect the painted finish on the nail head during installation. This helps preserve the color match between the nail head and the siding material, keeping the finished appearance clean and consistent.

Note: Product dimensions may differ from picture.