Simpson 5d Premium Siding Nail in 14-gauge, passivated Type 316 Stainless Steel is engineered for wood siding applications where long-term corrosion resistance is non-negotiable. With a 1-3/4" length, annular-ring shank, and full round circle head, this nail delivers a secure, lasting hold in harsh outdoor environments - including coastal and seaside installations where salt air and moisture would degrade lesser fasteners. Designed by Simpson Strong-Tie, a trusted name in structural fastening, this siding nail combines heavy-duty material quality with precision geometry to keep siding tight and surfaces looking clean for years.

Key Features

• Type 316 Stainless Steel material - provides superior resistance to corrosion in severely corrosive environments such as coastal, marine, and high-humidity applications, giving siding a fastener that lasts as long as the cladding itself
• Passivated finish - the passivation process enhances the natural corrosion resistance of the 316 stainless steel, forming a protective surface layer that stands up to salt spray, chemicals, and prolonged moisture exposure
• Annular-ring shank - the ringed shank bites into wood fibers and resists withdrawal forces far better than a smooth shank, so siding panels stay firmly anchored even through seasonal wood movement and high winds
• Full round circle head (7/32" diameter) - the circle head pattern reduces surface glare and accepts paint or surface finishes cleanly, keeping fastener heads inconspicuous after installation
• Diamond point tip - the blunt diamond point drives straight and true, minimizing board splitting on hardwood or tight-grained siding materials
• 14-gauge wire diameter - the 14-ga. shank diameter of 0.083" provides the structural mass needed for reliable siding fastening without requiring pre-drilling in most applications
• Made in the United States - domestic manufacture supports consistent quality control and material traceability in every nail

Why This Product

• For any siding project near the ocean or in a region with persistent moisture or chemical exposure, this 316 stainless steel nail is the correct choice - standard galvanized fasteners can corrode and stain siding in these conditions, while 316 SS holds its integrity and appearance
• The annular-ring shank directly addresses one of the most common siding failures: nail pull-through and pop-out over time. The mechanical grip of the ringed shank keeps wood siding panels flat and secure across years of thermal expansion and contraction
• The 1-3/4" length and 5d penny size hit the practical sweet spot for wood siding thickness, providing adequate penetration into sheathing without over-driving or breaking through underlying materials
• Passivated 316 stainless steel resists tannin staining on cedar and redwood siding - a common problem when iron-based or lower-grade fasteners react with wood acids, leaving dark streaks on finished surfaces

Specifications

• Brand: Simpson Strong-Tie
• Penny Size: 5d
• Length: 1-3/4 in.
• Gauge: 14
• Shank Diameter: 0.083 in.
• Head Diameter: 7/32 in.
• Head Type: Full Round Head
• Head Pattern: Circle Head
• Shank Type: Annular-Ring Shank
• Point Type: Diamond Point
• Material: Type 316 Stainless Steel
• Finish: Type 316 Stainless Steel
• Approximate Count per Lb.: 337
• Country of Origin: United States

Available Pack Options

• T5KR71: 1 Lb (337)
• T5KR75: 5 Lb (1685)
• T5KR7B: 25 Lb (8425)

Approved Applications

• Fastening Wood Siding

Frequently Asked Questions

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

Type 316 stainless steel contains molybdenum, which gives it significantly higher resistance to chloride corrosion compared to standard 304 stainless or galvanized fasteners. In seaside applications where salt air and moisture are constant, 316 SS maintains its integrity and prevents the rust staining that lower-grade metals can leave on wood siding surfaces.

What does the passivation process do to these nails?

Passivation is a chemical treatment applied to the stainless steel surface that removes free iron and other contaminants, allowing the natural chromium oxide layer to reform more completely. The result is a stronger, more uniform protective barrier on every nail - enhancing long-term corrosion resistance especially in severely corrosive environments.

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

The annular-ring shank features a series of rings along the shank that interlock with wood fibers as the nail is driven. This mechanical engagement dramatically increases withdrawal resistance, meaning the nail holds tighter over time even as wood expands, contracts, or is subjected to wind and impact loads - making it well-suited for exterior siding applications.

Will the circle head pattern affect how the nail looks after installation?

The circle head pattern is specifically designed to reduce surface glare and provide a smooth, paintable surface. It accepts standard exterior surface finishes, allowing the nail head to blend in after painting or staining - making it a practical choice for finished siding work where aesthetics matter alongside performance.

Note: Product dimensions may differ from picture. Please refer to the specifications listed above for exact measurements.