Simpson 10d Premium Siding Nail in passivated Type 316 Stainless Steel is engineered for wood siding fastening in the most demanding outdoor and coastal environments. Built by Simpson Strong-Tie, this 12-gauge, 3-inch nail delivers corrosion resistance far beyond standard fasteners, making it a trusted choice for seaside construction, high-humidity climates, and any application where long-term holding power matters. The annular-ring shank bites deep into wood fibers to resist pull-through, while the full round circle head provides a clean, low-profile finish that accepts surface coatings and reduces unwanted glare on exterior surfaces.

Key Features

• Passivated Type 316 Stainless Steel material - delivers superior resistance to saltwater, chlorides, and severely corrosive outdoor environments, making this nail suitable where standard stainless or galvanized fasteners would corrode prematurely.
• Annular-ring shank - the threaded-ring profile locks into wood fibers and dramatically increases withdrawal resistance compared to a smooth shank nail, providing greater long-term holding power in siding applications.
• Full round circle head (7/32 in. diameter) - the circular head pattern reduces surface glare and accepts paint and other exterior surface finishes, keeping the facade looking clean and uniform over time.
• Diamond point tip - the precision-cut point drives true and straight on impact, reducing board splitting during installation and minimizing waste from cracked siding boards.
• 12-gauge, 3-inch length (10d penny size) - delivers the penetration depth needed to securely anchor wood siding through sheathing and into framing members without overdriving.
• Made in the United States - domestic manufacturing under Simpson Strong-Tie's quality standards ensures consistent dimensional accuracy and material integrity nail after nail.

Why This Product

• Purpose-built for severely corrosive environments - Type 316 stainless steel is specifically chosen for seaside and coastal applications where salt air and moisture would rapidly degrade lesser metals. If your project is near the ocean or in a high-humidity zone, this nail is designed for exactly that challenge.
• Passivation adds an extra layer of protection - beyond the inherent corrosion resistance of 316 stainless, each nail is passivated to remove surface contaminants and enhance the protective oxide layer, extending service life in harsh outdoor conditions.
• Annular-ring shank means siding stays put - ordinary smooth-shank nails can work loose over time as wood expands and contracts seasonally. The annular-ring profile resists that loosening, keeping siding panels firmly fastened through years of weather cycles.
• Circle head pattern works with finished surfaces - the head is designed to accept paint or other surface treatments, so the fastener blends into the finished exterior rather than standing out as a visible blemish.

Specifications

• Brand: Simpson Strong-Tie
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel (Passivated)
• Gauge: 12
• Penny Size: 10d
• Length: 3 in.
• Head Diameter: 7/32 in.
• Head Type: Full Round Head
• Head Pattern: Circle Head
• Shank Diameter: 0.113 in.
• Shank Type: Annular-Ring Shank
• Point Type: Diamond Point
• Approximate Count Per Lb: 120
• Country of Origin: United States

Available Pack Options

• T10KR71: 1 Lb (120)
• T10KR75: 5 Lb (600)
• T10KR7B: 25 Lb (3000)

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

Why is Type 316 stainless steel recommended for siding in coastal or seaside locations?

Type 316 stainless steel contains molybdenum, which gives it enhanced resistance to chlorides - including salt air and saltwater - compared to standard 304 stainless. For wood siding installed near the ocean or in other severely corrosive environments, 316 stainless helps prevent the rust staining and structural weakening that would occur with carbon steel or lower-grade stainless fasteners. These nails are also passivated, adding an additional oxide barrier that further extends corrosion resistance.

What advantage does the annular-ring shank provide over a smooth-shank nail?

The annular-ring shank features a series of rings along the nail's body that grip wood fibers as the nail is driven. This mechanical interlock significantly increases withdrawal resistance - the force required to pull the nail back out - compared to a smooth shank of the same diameter and length. For siding applications subject to seasonal wood movement, wind loads, and moisture cycling, this additional holding power helps keep panels securely fastened over the long term.

What does the diamond point tip do during installation?

The diamond point is precision-cut to guide the nail straight into the wood as it is driven. This helps the nail track true without deflecting, which reduces the risk of the board splitting during fastening. Less splitting means less wasted material and a cleaner finished appearance on the exterior siding surface.

Is the circle head pattern compatible with painted or stained siding finishes?

Yes. The circle head pattern on the full round head is specifically designed to accept surface finishes such as paint or stain. The pattern also reduces glare on the head's surface compared to a flat smooth head, helping the fastener blend into the finished exterior appearance once a coating is applied.

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