Product Description
Simpson T8KRB Premium Siding Nail - 2-1/2 in. x 1/4 in. Head Dia., Type 316 Stainless Steel (25 lb.) by Simpson is an 8d, 12-gauge fastener built for wood siding installation in the most demanding, corrosion-prone conditions. Passivated Type 316 stainless steel construction makes this nail the trusted choice for seaside applications and severely corrosive environments, delivering lasting holding power where standard fasteners break down. The annular ring shank, full round head, and blunt diamond point work together to create a fastener that drives cleanly, holds securely, and stands up to the elements over the long term.
Key Features
- Type 316 stainless steel construction - provides superior corrosion resistance in seaside and severe-exposure environments where ordinary steel fasteners fail prematurely
- Passivated finish - an additional treatment that reinforces corrosion resistance throughout the nail's service life, not just on the surface
- Circle pattern full round head - reduces glare in direct sunlight and accepts paint or stain, helping the fastener blend into finished siding
- Annular ring shank - increases pull-out resistance and delivers greater holding power than a smooth-shank nail, keeping siding secure through wind loads and seasonal wood movement
- Blunt diamond point - drives true and reduces the risk of splitting boards, protecting the integrity of siding materials during installation
Why This Product
- Engineered for harsh coastal conditions - Type 316 stainless steel paired with passivation makes this nail one of the most corrosion-resistant options available for exterior siding, particularly in salt-air and high-moisture environments where lesser fasteners rust and stain
- Long-term holding power built into the shank - the annular ring shank actively resists pull-out over time, so siding stays firmly fastened even as wood expands, contracts, and faces repeated wind stress season after season
- Finish-friendly head design - the circle pattern head is designed to accept surface finishes, making it easier to achieve a clean, professional-looking result without the glare or bleed-through that uncoated fastener heads can cause
- Made in the United States by a trusted fastener brand - Simpson brings engineering-focused design to every detail of this nail, from the blunt diamond point that protects boards during driving to the passivated 316 stainless body that holds up in the field
Specifications
- MPN: T8KRB
- Material: Type 316 Stainless Steel
- Finish: Type 316 Stainless Steel
- Gauge: 12
- Penny Size: 8d
- Length: 2-1/2 in.
- Head Type: Full Round Head
- Head Pattern: Circle
- Head Diameter: 1/4 in.
- Shank Type: Annular-Ring Shank
- Shank Diameter: 0.113 in.
- Point Type: Diamond Point
- Package Quantity: 25 lb. bucket (approx. 3,625 nails)
- Country of Origin: United States
Approved Applications
- Fastening Wood Siding
Note: Product dimensions may differ from picture. Please refer to the specifications listed above for accurate dimensions.
Frequently Asked Questions
Why is Type 316 stainless steel recommended for siding in coastal or seaside environments?
Type 316 stainless steel offers superior resistance to corrosion compared to standard steel fasteners, making it ideal for severely corrosive environments including seaside applications where salt air and moisture accelerate the breakdown of lesser materials. These nails are also passivated to further ensure corrosion resistance throughout their service life.
What advantage does the annular ring shank provide over a smooth-shank nail?
The annular ring shank increases pull-out resistance and provides greater holding power than a smooth shank. This is especially important in siding applications where wind loads and seasonal wood movement can work fasteners loose over time.
What is the purpose of the circle pattern head on this siding nail?
The circle pattern on the full round head serves two practical purposes: it reduces glare on the nail head when exposed to sunlight, and it accepts surface finishes such as paint or stain, helping the fastener blend in with the surrounding siding material.
How does the blunt diamond point help during installation?
The blunt diamond point is designed to drive true - meaning it follows a straight path during installation - while also reducing the likelihood of splitting the board. This is particularly beneficial when nailing through wood siding where board integrity is critical to a clean, professional finish.
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