Simpson 8d x 2-1/2" Gray Painted Siding Nail in Type 304 Stainless Steel is a premium-quality fastener engineered specifically for cedar, redwood, and cypress siding installations. The gray painted finish allows nail heads to blend seamlessly into siding material, while the checkered head pattern mimics natural wood texture for a cleaner, more professional finish. Built from Type 304 stainless steel with an annular-ring shank, this nail delivers strong corrosion resistance and excellent withdrawal resistance - making it a dependable choice for exterior wood siding applications where holding power and appearance both matter.

Key Features

• Type 304 Stainless Steel material - provides durable corrosion resistance for exterior siding applications, helping the fastener hold up against moisture and the elements over time.
• Gray painted finish - helps nail heads blend with siding material for a cleaner, less visible fastening result on cedar, redwood, and cypress installations.
• Checkered head pattern - mimics natural wood grain texture so the head integrates visually with the siding surface rather than standing out as a contrasting element.
• Annular-ring shank - the ring profile bites into wood fibers to dramatically increase withdrawal resistance, keeping siding securely attached over the long term.
• 13-gauge slender shank at 0.092" diameter with a diamond point - the slim profile and sharp point make driving easier and reduce the risk of splitting cedar, redwood, or cypress siding boards.
• Full round head at 5/32" diameter - provides solid bearing surface against siding material for a secure, flush-seated fastener that resists pull-through.
• 8d penny size at 2-1/2" length - the proven nail sizing for wood siding fastening that penetrates adequately into structural sheathing or framing beneath.
• Made in the United States - manufactured domestically for consistent quality control and reliable dimensional accuracy.

Why This Product

• Designed to disappear into your siding - the combination of a gray painted head and a checkered texture pattern means these nails are purpose-built to minimize visual disruption on finished cedar, redwood, and cypress siding, not just generic stainless steel fasteners adapted for the job.
• Annular-ring shank holds tighter than smooth-shank alternatives - the ring pattern mechanically locks into wood fibers, resisting the natural expansion and contraction of exterior siding materials through seasonal changes without loosening over time.
• Type 304 stainless steel resists staining and corrosion on premium wood species - cedar, redwood, and cypress contain natural acids and tannins that can react with plain steel fasteners, causing streaks and premature rust; stainless steel avoids those issues entirely.
• Slender 13-gauge gauge with a diamond point reduces splitting risk - these species are prized for their natural beauty, so a nail that drives cleanly without cracking the board face protects both the look and the structural integrity of the installation.

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Color: Gray
• Penny Size: 8d
• Length (in.): 2 1/2
• Gauge: 13
• Shank Diameter (in.): 0.092
• Head Diameter (in.): 5/32
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Checkered
• Point Type: Diamond Point
• Approx. Count per Lb.: 196
• Country of Origin: United States

Available Pack Options

• S8SNDG1: 1 Lb (196)
• S8SNDG5: 5 Lb (980)
• S8SNDGB: 25 Lb (4900)

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

What wood species are these siding nails designed for?

These painted siding nails are specifically designed for cedar, redwood, and cypress siding material - three popular species for exterior cladding that benefit from a corrosion-resistant stainless steel fastener and a low-visibility painted head.

Why does the shank type matter for siding installations?

The annular-ring shank on this nail features a series of rings along the shank that grip wood fibers as the nail is driven in. This significantly increases withdrawal resistance compared to a smooth-shank nail, helping siding stay firmly secured even as the wood expands and contracts with temperature and humidity changes over time.

Is Type 304 stainless steel appropriate for all outdoor siding applications?

Type 304 stainless steel provides strong corrosion resistance for most exterior siding applications involving cedar, redwood, and cypress. For seaside or coastal environments with heavy salt-air exposure, Type 316 stainless steel offers superior corrosion resistance and may be a better fit for those conditions.

Can these nails be used with a hammer or are they intended for a nail gun?

These are hand-drive nails. The manufacturer recommends using hammer caps when driving painted-head nails to help protect the painted finish on the nail head during installation.

Note: Product dimensions may differ from picture.