National Marker N221622 Stainless Steel Eye Bolt 5/16x4 in

Product Description

The NATIONAL MARKER N221622 is a 5/16-inch by 4-inch stainless steel eye bolt assembled with a hex nut, designed for load-bearing and tie-off applications in demanding environments. The machine screw thread pattern ensures consistent engagement with standard fasteners and mounting hardware. Manufactured from stainless steel, this eye bolt resists corrosion in wet, coastal, or chemically exposed conditions. It is suited for use by contractors, riggers, maintenance technicians, and industrial tradespeople who require a reliable anchoring point in applications where carbon steel hardware would corrode prematurely.

This eye bolt is appropriate for residential and commercial installations where a threaded, looped anchor point is needed for lifting, rigging, cable routing, or equipment tie-down. The assembled hex nut allows for direct installation into a drilled and tapped surface or through a material with a nut bearing on the back face. Its stainless steel construction makes it well suited for outdoor structures, marine environments, pool equipment rooms, and other high-moisture or corrosive settings.

Key Features

• 5/16-inch diameter by 4-inch length with machine screw threads
• Assembled with hex nut for immediate installation
• Stainless steel construction provides corrosion resistance
• Part of the 2161BC catalog series
• Sold individually; minimum order quantity of 10 units per bulk box

Compatibility

Designed as a standard 5/16-inch machine screw thread eye bolt compatible with matching hex nuts and threaded mounting surfaces requiring a 5/16-inch fastener.

Installation Notes

Installation is performed by contractors, riggers, or maintenance technicians using standard hand tools. Ensure the mounting substrate is rated for the intended load before installation. Torque the assembled hex nut firmly against the mounting surface to prevent loosening under dynamic or cyclical loads. Always verify applicable load ratings and local codes before using eye bolts in overhead lifting or life-safety applications.

Technical Specifications

• Thread Diameter: 5/16 inches
• Bolt Length: 4 inches
• Thread Type: Machine screw
• Material: Stainless steel
• Hardware Included: Hex nut, assembled
• Weight: 0.113 pounds
• Minimum Order Quantity: 10
• UPC: 00038613191266

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N221622