Product Description
Simpson T12SNDB 12d Wood Siding Nail from Simpson is a purpose-built exterior fastener designed for securing wood siding panels where holding power and long-term durability are non-negotiable. The annular ring shank delivers superior withdrawal resistance over smooth-shank alternatives, helping keep siding boards flat and firmly in place through seasonal movement and exposure. Type 316 stainless steel construction provides severe-level corrosion resistance, making this nail a reliable choice for coastal, high-humidity, and other demanding outdoor environments where lesser fasteners fail prematurely.
Key Features
- Annular ring shank - increases withdrawal resistance to provide a secure attachment that actively reduces cupping of siding boards over time, keeping your exterior cladding looking straight and tight.
- Checker pattern on the full round head - blends with wood grain, reduces glare from sunlight, and accepts surface finishes, so fastener heads remain unobtrusive on finished siding.
- Type 316 stainless steel material and finish - provides severe-level corrosion resistance, making these nails well suited for exterior applications subject to moisture, salt air, and harsh weather.
- Diamond point tip - allows for easier driving and cleaner entry into wood siding panels, reducing splitting risk and speeding up installation.
- Full round head profile - delivers broad bearing surface for strong pull-through resistance, helping hold siding panels securely against the substrate under wind load and board movement.
- 12-gauge, 12d penny size at 3 1/4 in. length - sized specifically for wood siding applications, offering the reach and shank strength needed to fasten through siding into structural framing.
- 25 lb. bucket packaging at approximately 110 nails per pound - provides a high nail count in a single purchase, keeping large siding projects stocked without constant reordering.
Why This Product
- Built for harsh exterior environments - Type 316 stainless steel is rated for severe-level corrosion resistance, making these siding nails a dependable long-term fastener choice in coastal, wet, and high-exposure settings where standard nails corrode and stain the siding surface.
- Engineered to fight siding movement - the annular ring shank is specifically designed to resist withdrawal forces that cause siding boards to cup, buckle, or pull away from the wall over time, giving you a more stable and longer-lasting installation than smooth-shank nails provide.
- Finish-friendly head design - the checkered full round head is purpose-designed to accept paints and surface finishes and reduce sunlight glare, so the fasteners integrate cleanly into the finished appearance of painted or stained wood siding.
- American-made quality from a trusted fastener brand - produced by Simpson, a manufacturer with a well-established reputation in structural and exterior fastening, and made in the United States, giving contractors and builders confidence in material consistency and product reliability job after job.
Specifications
- MPN: T12SNDB
- Brand: Simpson Strong-Tie
- Material: Type 316 Stainless Steel
- Finish: Type 316 Stainless Steel
- Gauge: 12
- Penny Size: 12d
- Length: 3-1/4 in.
- Head Type: Full Round Head
- Head Diameter: 7/32 in.
- Head Pattern: Checkered
- Shank Type: Annular-Ring Shank
- Shank Diameter: 0.113 in.
- Point Type: Diamond Point
- Package Quantity: 25 lb. per bucket (appx 110 per lb.)
- Country of Origin: United States
Approved Applications
- Fastening Wood Siding
Note: Product dimensions may differ from picture. Please see the item description above for specifications.
Frequently Asked Questions
What type of corrosion resistance does the T12SNDB offer?
The T12SNDB is manufactured from Type 316 stainless steel, which provides severe-level corrosion resistance. This makes it an excellent choice for exterior siding applications exposed to moisture and harsh environmental conditions.
Why does this nail use an annular ring shank instead of a smooth shank?
The annular ring shank increases withdrawal resistance compared to a smooth shank, providing a more secure attachment that helps reduce cupping of siding boards over time.
What does the checker pattern on the head do?
The checker pattern on the full round head is designed to blend with wood grain, reduce glare from sunlight, and accept surface finishes, resulting in a cleaner, less obtrusive appearance on finished siding.
How many nails are included in the 25 lb. bucket?
The 25 lb. bucket contains approximately 110 nails per pound, yielding roughly 2,750 nails total per bucket.
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