Simpson 2-1/2" Premium Common Nail in 316 Stainless Steel is engineered for demanding fastening applications where corrosion resistance is non-negotiable. Made by Simpson and manufactured in the United States, this 10-gauge annular-ring shank nail is passivated Type 316 stainless steel - a material grade widely recognized for its ability to withstand saltwater exposure, moisture, and severe environmental conditions. Whether you are working on coastal construction, seaside decking, or any application where standard fasteners would corrode prematurely, this premium common nail delivers the holding power and longevity the job requires.

Key Features

• Type 316 stainless steel construction - provides superior resistance to saltwater, humidity, and harsh chemical environments, making it ideal for seaside and severe-exposure applications where lesser alloys would rust and fail
• Passivated finish - the passivation process enhances the nail's natural corrosion resistance, extending service life in outdoor and coastal environments without additional coatings that could degrade over time
• Annular-ring shank design - the ringed shank grips surrounding material more aggressively than a smooth shank, increasing pull-out resistance and delivering greater long-term holding power in structural and framing connections
• Circle pattern head - reduces surface glare in finished applications and accepts paint, stain, and other surface finishes, making it suitable for visible or architectural work
• Blunt diamond point - drives straight and true while reducing the likelihood of board splitting, giving installers cleaner results and fewer wasted fasteners
• 10 gauge, 2-1/2" length (8d penny size) - a versatile common nail dimension suited for a wide range of framing, sheathing, and general construction tasks
• 0.131" shank diameter - provides consistent engagement with the substrate and meets dimensional expectations for 10-gauge common nail applications
• Made in the United States - domestically produced to consistent quality standards, ensuring reliable performance across the full range of the nail's rated specifications

Why This Product

• Built for seaside and severe-exposure environments - standard galvanized or zinc-coated nails can corrode rapidly in salt air and high-moisture conditions. This passivated 316 stainless steel nail is specifically suited for coastal construction, marine-adjacent structures, and any environment where corrosion is a primary concern.
• Holds tighter over time - the annular-ring shank mechanically interlocks with wood fibers, meaning the nail resists loosening due to seasonal wood movement, vibration, or load stress - a critical advantage in structural and exterior applications.
• Finish-friendly for visible applications - the circle head pattern is designed to accept surface finishes and reduce glare, so these nails work well in finish carpentry, trim work, or any visible installation where aesthetics matter alongside performance.
• Reduces installation waste - the blunt diamond point is engineered to drive cleanly and reduce board splitting, meaning fewer cracked boards, fewer re-drives, and a cleaner finished result on the job site.

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 316 Stainless Steel
• Gauge: 10
• Penny Size: 8d
• Length: 2-1/2 in.
• Head Diameter: 2/7 in.
• Shank Diameter: 0.131 in.
• Shank Type: Annular-Ring Shank
• Head Pattern: Circle Head
• Point Type: Diamond Point
• Approx. Count per Lb.: 94
• Finish: Passivated
• Country of Origin: United States

Available Pack Options

• T8AKR1: 1 Lb (94)
• T8AKR5: 5 Lb (470)
• T8AKRB: 25 Lb (2350)

Frequently Asked Questions

Why is Type 316 stainless steel recommended for seaside applications?

Type 316 stainless steel contains molybdenum, which gives it enhanced resistance to chloride corrosion - the primary cause of fastener failure in saltwater and coastal environments. When combined with passivation, as used in this nail, the result is a fastener that maintains its structural integrity and appearance even in prolonged exposure to salt air and moisture.

What does passivation do to a stainless steel nail?

Passivation is a chemical finishing process that removes free iron and other contaminants from the surface of stainless steel, allowing a stable chromium oxide layer to form. This layer acts as a barrier against corrosion. On these Simpson 316 stainless steel nails, passivation ensures the full corrosion-resistant potential of the 316 alloy is realized, particularly important in severe-exposure environments.

How does the annular-ring shank improve holding power compared to a smooth shank nail?

The annular rings along the shank create mechanical interlock with wood fibers as the nail is driven. This significantly increases resistance to withdrawal forces compared to a smooth shank nail of the same dimensions. For applications subject to vibration, load cycling, or seasonal wood movement - common in exterior and structural work - this translates to a more secure and durable connection over time.

Is the blunt diamond point suitable for hardwoods or dense lumber?

The blunt diamond point is specifically designed to drive straight while reducing the tendency of wood to split along the grain. This makes it particularly useful in dense or dry lumber where splitting is more likely. The geometry of the point helps displace fibers rather than wedge them apart, resulting in cleaner drives and fewer damaged boards during installation.

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