The Simpson 15 deg. Wire Coil Full Round Head Ring-Shank Nail 2-1/4 in. x.099 in. 12 Ga. 1800-Pk from Simpson is a high-performance collated fastener built for wood deck boards and general framing where holding strength and long-term durability are critical. Constructed from Type 316 stainless steel, these ring-shank nails are engineered to stand up to coastal, marine, and high-moisture environments that would quickly degrade standard fasteners. The 15 deg. wire-coil format pairs with pneumatic coil nailers from many major manufacturers, helping crews drive faster and work more efficiently on demanding job sites.

Key Features

• Type 316 stainless steel construction - provides severe-level corrosion resistance, making these nails a reliable choice for saltwater-adjacent, marine, and high-humidity applications where rust and degradation are ongoing concerns.
• Annular ring-shank design - increases withdrawal resistance significantly compared to smooth-shank fasteners, locking into wood fibers to deliver a secure, lasting attachment in decking and framing assemblies.
• Checkered head pattern - blends with wood grain, reduces glare from sunlight, and accepts surface finishes, keeping finished deck surfaces looking clean and consistent.
• Full round head - provides maximum bearing surface against the wood for a strong, code-friendly connection in structural framing and deck board applications.
• 15 deg. wire-coil collation - reduces driving force and increases installation speed, and is compatible with many major manufacturers' pneumatic coil nailers for versatile use across job sites.
• Diamond point tip - promotes consistent, on-target penetration with each drive, reducing the chance of deflection or split wood during installation.
• 12 gauge, 2-1/4 in. length - sized appropriately for deck board attachment and light framing tasks, balancing holding power with clean, controlled fastener placement.

Why This Product

• Built for harsh environments - Type 316 stainless steel goes beyond standard corrosion resistance to offer severe-level protection, making these nails purpose-matched for coastal builds, docks, and any exterior project exposed to moisture or salt air over time.
• Superior holding power in wood - the annular ring shank grips the surrounding wood fibers far more aggressively than a smooth shank, reducing the risk of fastener back-out in decking and framing under seasonal movement and load.
• Finish-friendly head design - the checkered head pattern minimizes glare and accepts stains or surface coatings, which matters on visible deck surfaces where fastener heads are exposed to foot traffic and direct sunlight.
• Pneumatic-ready for faster installation - wire-coil collation at 15 deg. reduces driving force and works with many major manufacturers' nailers, so professional crews can maintain a fast, efficient workflow on both framing and deck board applications.

Specifications

• Model Number (MPN): T12A225PNJ
• Brand: Simpson Strong-Tie
• Penny Size: 7d
• Length: 2-1/4 in.
• Gauge: 12
• Shank Diameter: 0.099 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Diameter: 1/4 in.
• Head Pattern: Checkered
• Point Type: Diamond Point