Simpson 5-inch 40d Annular Ring Shank Common Nail in Type 304 Stainless Steel by Simpson Strong-Tie delivers a high-performance fastening solution built for demanding wood construction applications. Engineered with a 6-gauge shank and an annular ring profile, this heavy-duty common nail provides exceptional withdrawal resistance - making it a reliable choice for wood-to-wood fastening and structural framing projects where long-term holding power is critical. The Type 304 stainless steel material resists corrosion in outdoor and moisture-exposed environments, helping exterior structures maintain their integrity season after season.

Key Features

• Annular ring shank design - increases withdrawal resistance compared to smooth-shank nails, creating a more secure grip in wood framing and structural applications
• Type 304 stainless steel material - delivers corrosion resistance for exterior and outdoor use, protecting the fastener and surrounding lumber from rust and premature degradation
• 5-inch length / 40d penny size - provides deep penetration for heavy structural connections in wood framing, supporting solid load transfer through thick lumber sections
• Full round head (7/16 in. diameter) - maximizes bearing surface against the wood for strong pullthrough resistance and consistent fastener seating
• Diamond point tip - enables clean, controlled nail driving with reduced splitting risk, making installation faster and more efficient
• 6-gauge shank at 0.203 in. diameter - provides substantial shank strength suited for heavy-duty framing tasks where lateral load performance matters
• Made in the United States - manufactured to Simpson Strong-Tie's quality standards, ensuring consistent dimensions and material integrity across every fastener

Why This Product

• Built for exterior structural framing - the combination of Type 304 stainless steel and an annular ring shank makes this nail a dependable choice where both corrosion resistance and high withdrawal strength are required in outdoor wood construction
• Annular ring shank solves the loosening problem - unlike smooth-shank fasteners that can back out over time, the ring shank profile mechanically locks into wood fibers, maintaining connection integrity under load cycling and seasonal wood movement
• Right-sized for heavy framing - the 5-inch, 40d length paired with a 6-gauge, 0.203-inch diameter shank addresses applications that require deep penetration and strong lateral resistance in thick timber or multi-ply framing assemblies
• Trusted Simpson Strong-Tie engineering - Simpson Strong-Tie specifically designs this nail to meet the requirements for corrosion-resistant fastening in exterior living spaces, offering the same long-lasting performance indoors as outdoors

Specifications

• Brand: Simpson Strong-Tie
• Length: 5 in.
• Penny Size: 40d
• Gauge: 6
• Shank Diameter: 0.203 in.
• Head Diameter: 7/16 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Point Type: Diamond Point
• Material: Type 304 Stainless Steel
• Finish: Type 304 Stainless Steel
• Approx. Count per Lb: 19
• Country of Origin: United States

Available Pack Options

• S40ACN1: 1 Lb (19)
• S40ACN5: 5 Lb (95)
• S40ACNB: 25 Lb (475)

Approved Applications

• Fastening Wood-to-Wood
• Framing - Wood

Frequently Asked Questions

What is the advantage of an annular ring shank over a smooth shank nail?

The annular ring shank increases withdrawal resistance by mechanically interlocking with wood fibers as the nail is driven. This means the nail is significantly harder to pull out than a smooth-shank common nail of the same size, resulting in a more secure and durable connection - particularly important in structural wood framing and outdoor applications where movement and loading are ongoing concerns.

Is Type 304 stainless steel appropriate for outdoor and exterior construction applications?

Yes. Type 304 stainless steel provides strong corrosion resistance, making it well-suited for exterior wood construction projects exposed to moisture and weather. Simpson Strong-Tie specifically offers this nail as part of their line of exterior fastening solutions designed to help outdoor structures last as long as interior ones. For seaside or highly corrosive salt-spray environments, a Type 316 stainless steel option may offer additional corrosion protection.

How many of these nails are in a pound?

There are approximately 19 nails per pound for this 5-inch, 6-gauge Type 304 stainless steel annular ring shank common nail. This count can help you estimate how much product you need based on your project's fastener requirements.

Where is this Simpson nail manufactured?

This nail is manufactured in the United States, reflecting Simpson Strong-Tie's commitment to quality production and consistent dimensional standards across their fastener product line.