Simpson 4d x 1-1/2" Annular Ring Shank Roofing Nail in 316 Stainless Steel is a professional-grade fastener engineered for demanding roofing applications where corrosion resistance and long-term holding power are essential. Manufactured in the United States by Simpson, this 10-gauge nail features an annular ring shank that dramatically increases withdrawal resistance compared to smooth-shank alternatives, making it a reliable choice for securing roofing materials to wood members and plywood roof decks in coastal, marine, and high-moisture environments.

Key Features

• Type 316 Stainless Steel construction - provides superior resistance to saltwater, chlorides, and harsh outdoor environments, making it well-suited for coastal and marine roofing installations where standard steel fasteners would corrode prematurely
• Annular ring shank design - significantly increases withdrawal resistance compared to smooth-shank nails, locking the fastener firmly in place and reducing the risk of pull-through in wood decking and roof substrates
• Full round head with smooth head pattern - delivers a large, flat bearing surface (0.375 in. head diameter) that spreads load over roofing material to prevent tearing and pull-through during installation and under wind uplift
• 10-gauge shank (0.131 in. diameter) - provides the structural shank strength needed for roofing applications without splitting thinner sheathing or tile underlayment
• Diamond point tip - enables clean penetration into wood members and plywood roof decks, reducing split risk and improving installation speed
• 1-1/2 in. length (4d penny size) - sized appropriately for standard roofing material thicknesses, ensuring adequate embedment depth without over-penetrating thin substrates
• Made in the United States - manufactured to consistent domestic quality standards, supporting confidence in dimensional accuracy and material integrity

Why This Product

• Built for corrosive environments - Type 316 stainless steel is the preferred material grade for roofing fasteners in saltwater-adjacent, coastal, and chemically challenging climates where lesser materials fail quickly, extending the service life of your roofing assembly
• Maximized mechanical holding power - the annular ring shank works like a series of interlocking ridges once driven, resisting the cyclic wind loads and thermal expansion cycles that commonly cause smooth-shank nails to back out over time
• Full round head prevents roofing material damage - the 0.375 in. head diameter distributes clamping force across a wider surface area, protecting delicate roofing materials from cracking or tearing at the fastener point
• Precision 10-gauge sizing - the 0.131 in. shank diameter meets common roofing fastener specifications, making this nail a suitable replacement or upgrade option for standard roofing nail applications requiring stainless steel performance

Specifications

• Brand: Simpson Strong-Tie
• Material/Coating: Type 316 Stainless Steel
• Gauge: 10
• Penny Size: 4d
• Length: 1-1/2 in.
• Head Diameter: 0.375 in.
• Shank Diameter: 0.131 in.
• Shank Type: Annular-Ring Shank
• Head Type: Full Round Head
• Head Pattern: Smooth Head
• Point Type: Diamond Point
• Approx. Count per Lb.: 139
• Country of Origin: United States

Available Pack Options

• T410ARN1: 1 Lb
• T410ARN5: 5 Lb
• T410ARNB: 25 Lb

Frequently Asked Questions

What makes Type 316 stainless steel different from standard steel roofing nails?

Type 316 stainless steel contains molybdenum in addition to chromium and nickel, which gives it enhanced resistance to chlorides, saltwater, and chemical corrosion compared to standard galvanized or carbon steel nails. This makes it particularly well-suited for roofing projects in coastal, marine, or high-humidity environments where ordinary fasteners would rust and stain roofing materials.

What does an annular ring shank do and why does it matter for roofing?

An annular ring shank features circular ridges along the length of the nail that act as mechanical anchors once driven into wood. These rings grip the surrounding wood fibers and significantly increase withdrawal resistance compared to smooth-shank nails. For roofing applications, this means the nail is far less likely to back out under repeated wind uplift, thermal cycling, or structural movement - contributing to a more secure and durable roofing assembly.

What substrate types is this roofing nail designed for?

This nail is designed for use in wood members and plywood roof decks. The annular ring shank and diamond point work together to provide clean penetration and strong anchorage in wood-based substrates commonly used in residential and commercial roofing construction.

Where is this roofing nail manufactured?

This Simpson roofing nail is manufactured in the United States, supporting consistent quality control and adherence to domestic dimensional and material standards throughout production.

Note: Product dimensions may differ from picture.