National Marker N221648 Stainless Steel Eye Bolt 3/8x4

Product Description

The NATIONAL MARKER N221648 is a 3/8-inch by 4-inch stainless steel eye bolt assembled with a hex nut and machine screw threads. Built from stainless steel, it resists corrosion in wet, outdoor, and chemically active environments. The assembled configuration includes the hex nut, so it is ready for immediate installation without sourcing additional hardware. This fastener is appropriate for rigging, lifting, anchoring, and tie-down applications across construction, industrial, and marine settings. Licensed contractors and maintenance professionals working in demanding or moisture-prone environments rely on stainless steel eye bolts for long-term holding strength without degradation.

The N221648 is suited for residential and commercial applications where corrosion resistance is a priority. Typical uses include overhead anchoring points, cable and rope routing, equipment tie-downs, and structural attachment in outdoor or coastal environments. The machine screw thread profile allows secure engagement with standard hex nuts and threaded inserts. This eye bolt is sold as a single assembled unit.

Key Features

• Stainless steel construction resists corrosion in wet and marine environments
• 3/8-inch diameter by 4-inch length machine screw thread configuration
• Assembled with hex nut — ready to install out of the box
• Bulk box pack for job-site or shop stocking
• Part of the catalog model 2161BC series

Compatibility

Designed as an OEM-style replacement or standard-fitment eye bolt for 3/8-inch threaded applications requiring a 4-inch shank length in corrosion-resistant stainless steel.

Installation Notes

Installation is typically performed by contractors, riggers, or maintenance technicians using standard hand tools. Always power down or de-energize adjacent systems before working in confined or overhead spaces. Ensure the receiving substrate or threaded hole is rated for the intended load before applying tension. Torque the hex nut to the substrate manufacturer's specification and verify secure seating before applying load.

Technical Specifications

• Diameter: 3/8 inches
• Length: 4 inches
• Thread Type: Machine screw
• Material: Stainless steel
• Hardware Included: Hex nut, assembled
• Weight: 0.175 pounds
• UPC: 00038613191280
• Sold As: Each

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N221648