Simpson 1-1/4" 3d Smooth Shank Common Nail in 304 Stainless Steel is a 14-gauge fastener built for decking, general wood construction, and permanent wood foundation applications where corrosion resistance and long-term holding power matter. Crafted from Type 304 stainless steel, this full round head nail delivers dependable performance in demanding outdoor environments, making it a trusted choice for contractors and builders who need a reliable smooth shank nail that stands up to moisture and the elements.

Key Features

• Type 304 stainless steel construction - resists rust and corrosion in outdoor and wet-environment applications, extending the service life of the fastener and the structure it secures
• 14-gauge shank diameter of 0.083" - provides a solid, consistent drive without splitting wood, making it well-suited for a wide range of general wood construction tasks
• 1-1/4" length (3d penny size) - sized for lighter structural connections and trim work where precise, controlled penetration is required
• Smooth shank profile - allows clean, easy driving into wood for fast installation in high-volume framing and decking applications
• Full round head with smooth head pattern - distributes holding force evenly across the wood surface, reducing the risk of surface damage or tear-through
• Diamond point tip - pierces wood cleanly and accurately, reducing splitting and improving placement control during installation
• 7/32" head diameter - large enough to seat securely without overworking the wood surface, delivering consistent results nail after nail
• Made in the United States - manufactured domestically to quality standards expected in professional construction and building projects

Why This Product

• 304 stainless steel is the right choice for outdoor wood construction - when building decks, fences, or permanent wood foundations exposed to rain, humidity, and changing temperatures, stainless steel fasteners help prevent the corrosion and staining that standard nails can cause over time
• Trusted Simpson brand quality in a common nail format - Simpson is a well-established name in structural connectors and fasteners, and this common nail carries that same commitment to dimensional consistency and material integrity
• Smooth shank for fast, efficient driving - when speed and volume matter on the job site, a smooth shank nail drives quickly and cleanly, reducing fatigue and keeping projects on schedule
• Diamond point and full round head work together for precision placement - the sharp tip starts the nail accurately while the full round head seats flush, reducing callbacks and rework on finished surfaces

Specifications

• Brand: Simpson Strong-Tie
• Coating/Material: Type 304 Stainless Steel
• Gauge: 14
• Penny Size: 3d
• Length: 1-1/4 in.
• Head Diameter: 7/32 in.
• Shank Diameter: 0.083 in.
• Shank Type: Smooth Shank
• Head Type: Full Round Head
• Head Pattern: Smooth Head
• Point Type: Diamond Point
• Approx. Count per Lb.: 473
• Country of Origin: United States

Available Pack Options

• S3CN1: 1 Lb (473)
• S3CNB: 25 Lb (11825)

Frequently Asked Questions

What is Type 304 stainless steel and why does it matter for nails?

Type 304 stainless steel is a corrosion-resistant alloy commonly used in construction fasteners. For nails, it means the fastener will resist rust and surface degradation when exposed to moisture and outdoor conditions, making it a preferred choice for decking, wood foundations, and other exterior applications where nail corrosion could compromise structural integrity or cause staining on wood surfaces.

What does the "3d" or penny size designation mean for this nail?

The "3d" designation is a traditional penny size rating used to classify nail length. For this nail, 3d corresponds to a 1-1/4" length. The penny sizing system is a standard reference used throughout the construction and building trades to quickly identify nail dimensions.

Is this nail suitable for permanent wood foundation construction?

Yes. Stainless steel nails are recommended for construction of permanent wood foundations in accordance with the ANSI/AWC Permanent Wood Foundations Design Specifications. The Type 304 stainless steel used in this nail helps meet the corrosion resistance requirements for that application.

What is the difference between a smooth shank and an annular ring shank nail?

A smooth shank nail, like this one, drives quickly and cleanly into wood, making it efficient for high-volume applications. An annular ring shank nail features ridges along the shank that increase withdrawal resistance - meaning it is harder to pull out once driven. The best choice depends on the specific application: smooth shank for general construction speed, ring shank where maximum holding power is needed.

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