N221-218 Eye Bolt, 5/16-18 Thread, 3-1/4 In

The National Hardware N221-218 eye bolt is a zinc-plated steel fastener designed for secure anchoring in both exterior and interior applications. The 5/16-inch shank with 5/16-18 threading provides a strong, reliable connection point for ropes, cables, chains, and hooks. Its compact eye loop delivers a dependable attachment point, making installation straightforward for homeowners, contractors, and DIY enthusiasts alike.

This eye bolt solves common fastening challenges by combining corrosion resistance with load-bearing strength. The bright zinc coating shields the steel from rust and oxidation, extending service life even in damp environments, decks, barns, and outdoor structures. The precision-machined threads ensure a tight, vibration-resistant fit when paired with the included hex nut, reducing slippage over time and enhancing overall safety.

Features and Benefits

• Zinc-Plated Finish: Provides superior rust and corrosion protection for long-term durability in outdoor and damp indoor settings.
• 5/16-Inch Shank: Delivers a strong core suitable for medium-weight loads and general-purpose anchoring tasks.
• Precision Threading: 5/16-18 threads guarantee a snug, secure fit with the included hex nut and compatible fasteners.
• Hex Nut Included: Comes with hex nut for assembly.
• Versatile Application: Suitable for home improvement, outdoor projects, agricultural installations, and commercial construction.

Specifications

• Brand: National Hardware
• Model: N221-218
• Thread Size: 5/16-18
• Thread Length: 1-3/4 inch
• Shank Length: 1.97 inch
• Eye Inside Diameter: 3/4 inch
• Overall Length: 3-1/4 inch
• Material: Zinc-plated steel
• Finish: Bright zinc coating
• Included: Hex nut