National Marker N220681 Zinc Lag Screw Eye 5/16x4in

Product Description

The NATIONAL MARKER N220681 is a zinc-finish lag screw eye designed for secure anchoring and fastening applications in trade and light industrial settings. The eye-head design accepts rope, wire, hooks, and similar hardware, while the lag thread profile drives directly into wood framing or structural members without requiring a nut. At 5/16 inches in diameter and 4 inches in length, it provides a firm grip in solid lumber and is well suited for HVAC, electrical, and plumbing trades that need a reliable anchor point for hanging lines, conduit, or duct runs from framing.

This lag screw eye is used wherever a threaded anchor point with a looped head is needed in wood substrates. Common applications include suspending conduit hangers, copper or PEX supply lines, refrigerant line sets, or light duct runs from joists or rafters. The 5/16 inches shank diameter handles moderate hanging loads in residential and light commercial construction. It is sold individually by unit of measure and is typically purchased in minimum quantities of 10.

Key Features

• Steel construction with zinc finish for corrosion resistance in typical indoor environments
• 5/16 inches diameter shank provides a reliable grip in wood framing members
• 4 inches length delivers adequate thread engagement in dimensional lumber
• Lag thread profile drives directly into pre-drilled wood pilot holes without a backing nut
• Eye-head opening accepts rope, wire, hooks, and standard hanging hardware
• Part of the 2150BC series bulk box pack for jobsite use

Compatibility

Designed as a general-purpose lag screw eye for use in wood framing substrates. Suitable for residential and light commercial applications where a threaded anchor point with an open eye is required.

Installation Notes

A licensed or experienced trade professional should pre-drill a pilot hole sized to the shank diameter before driving the lag screw eye to prevent splitting the wood member. Drive using an appropriate bit or rod through the eye loop for leverage — do not over-torque beyond hand-tight seating. Follow applicable local building codes and NEC or IPC guidelines when using fasteners to support electrical conduit, piping, or mechanical systems.

Technical Specifications

• Shank Diameter: 5/16 inches
• Length: 4 inches
• Material: Steel
• Finish: Zinc
• Weight: 0.117 pounds
• Series: 2150BC
• UPC: 00038613122857

Standard Information

• Brand: NATIONAL MARKER
• Manufacturer Part Number: N220681