The Simpson 4d x 1-1/2 in. Annular Ring Shank Roof Nail with EPDM Washer, 304 Stainless Steel, 10 Gauge is a purpose-built fastener engineered for exterior roofing and sheathing applications where moisture resistance and long-term holding power are non-negotiable. Constructed from Type 304 stainless steel and paired with a Type 316 stainless steel and bonded EPDM sealing washer, this 10-gauge nail is designed to deliver a weatherproof seal at every fastener point while resisting corrosion in demanding exterior environments. The annular ring shank geometry provides superior withdrawal resistance in wood substrates, making it a reliable choice for projects specifying stainless steel fasteners in corrosion-prone or high-moisture conditions.

Key Features

• Type 304 Stainless Steel Nail Body - Provides strong corrosion resistance for exterior and coastal roofing applications where standard steel fasteners are prone to rust and premature degradation.
• Annular Ring Shank - The ring shank profile locks into wood substrates and significantly increases withdrawal resistance compared to smooth-shank fasteners, keeping roof and wall sheathing firmly secured over time.
• Full Round Head with Type 316 Stainless Steel and Bonded EPDM Washer - The integrated washer assembly creates a weather-resistant seal at each fastener point, helping prevent moisture infiltration through the sheathing surface.
• 10 Gauge, 4d, 1 1/2 in. Length - Sized specifically for exterior roof sheathing and wall sheathing applications, offering the right balance of penetration depth and holding capacity for these substrates.
• Diamond Point Tip - Promotes clean, accurate driving with reduced splitting risk, helping maintain fastener consistency across large sheathing installations.
• Simpson Engineering and Domestic Fabrication - Backed by Simpson's reputation for structural fastener quality, with production rooted in the United States.

Why This Product

• Dual-material washer system adds a layer of protection standard roof nails skip - The combination of a Type 316 stainless steel washer with a bonded EPDM seal addresses a common failure point in exterior roofing: moisture intrusion at the fastener hole. This makes the nail especially well suited for weather-exposed installations.
• Stainless steel construction throughout supports long service life in harsh environments - For projects in coastal, high-humidity, or otherwise corrosion-prone settings, using a Type 304 stainless steel fastener helps avoid the rust staining and structural compromise that can come from lower-grade alternatives.
• Annular ring shank delivers mechanical holding power that smooth-shank nails cannot match - In roof and wall sheathing applications where wind uplift and cyclical loading are concerns, the ring shank profile resists pullout more effectively, contributing to a more durable installation.
• A single fastener handles both structural and weatherproofing demands - Rather than relying on a separate sealant or flashing detail at each nail point, the integrated EPDM washer seals as the nail is driven, simplifying installation without sacrificing performance.

Specifications

• Model Number: S10A150X01-E
• Material: Type 304 Stainless Steel
• Gauge: 10
• Penny Size: 4d
• Length: 1-1/2 in.
• Head Diameter: 3/8 in.
• Shank Diameter: 1/8 in.
• Shank Type: Annular Ring Shank
• Head Type: Full Round Head with Washer
• Head Pattern: Smooth
• Point Type: Diamond Point
• Washer Material: Type 316 Stainless Steel with Bonded EPDM
• Country of Origin: United States

Approved Applications

• Exterior roof sheathing installation
• Weather-resistant roofing applications requiring a sealing fastener
• Exterior wall sheathing where moisture infiltration resistance is required
• Applications requiring high withdrawal resistance in wood substrates
• Projects specifying stainless steel fasteners for corrosion-prone environments

What's Included

• 1 x Simpson 4d x 1-1/2" Annular Ring Shank Roof Nail with EPDM Washer, Type 304 Stainless Steel, 10 Gauge (Model S10A150X01-E)

Frequently Asked Questions

What material is this roof nail made from, and why does it matter for exterior applications?

This nail is constructed from Type 304 stainless steel, which provides exceptional corrosion resistance for long-term performance in exterior and coastal environments where standard steel fasteners may rust or degrade over time.

What is the purpose of the EPDM washer on this nail?

The bonded EPDM washer, paired with a Type 316 stainless steel washer, creates a weather-resistant seal at the fastener point to prevent moisture intrusion in exterior sheathing and roofing applications, making it especially useful where watertight performance is critical.

Why does this nail use an annular ring shank instead of a smooth shank?

The annular ring shank geometry significantly increases withdrawal resistance compared to a smooth shank, ensuring a secure and permanent attachment that resists pull-out forces - an important characteristic for roofing and exterior sheathing where fastener retention under stress is essential.

What are the key dimensions and gauge of this nail?

This nail is a 4d size with a 1-1/2" length and a 10-gauge shank. The heavy 10-gauge wire diameter delivers added strength and holding power compared to lighter-gauge alternatives.