Chicago Hardware Lag Hook — Left & Right Hand Thread

The Chicago Hardware Lag Hook is a foundational component in tree cabling and bracing systems. This strong J-bolt with lag thread is designed to be driven directly into the tree, providing a secure anchor point for steel cable. Meets or exceeds standards for arborist cabling applications, and bright plating provides corrosion resistance for long-term performance in the field.

Available in both left-hand (LH) and right-hand (RH) thread configurations, and in four diameters from 1/4" to 5/8" — select the size appropriate for your cable diameter and tree species. All versions vary in length: 1/4" is 3-1/2" long, 3/8" is 4-1/4" long, 1/2" is 6" long and 5/8" is 7" long.

Specifications

Length:
- 1/4" is 3-1/2" long
- 3/8" is 4-1/4" long
- 1/2" is 6" long
- 5/8" is 7" long
Thread: Available in Left Hand (LH) and Right Hand (RH)
Available diameters: 1/4", 3/8", 1/2", 5/8"
Finish: Bright plated for corrosion resistance
Weight: Varies
Manufacturer: Chicago Hardware (USA)

Key Features

Meets or exceeds arborist cabling standards
Bright plated for corrosion resistance in outdoor applications
Available in left and right hand thread for proper cable termination
Four diameter options to match your cable size

🔥 Quick Decision Guide

Best For: Installing tree cabling and bracing systems requiring a lag-threaded anchor point in the tree
Not Ideal For: Dynamic or high-load rigging applications — designed specifically for static tree support cabling
Skill Level: Certified arborists and technicians trained in tree cabling installation
Use Case: Anchoring steel cable to a tree as part of a supplemental support system
Why Choose This: Meets arborist standards, bright plated for longevity, available in both thread directions and multiple diameters
Compare To: Eye bolts (through-bolt installation, more invasive but stronger); screw-in eye hooks (lighter duty)

Frequently Asked Questions

When do I need left-hand vs. right-hand thread?
In a cabling system, one end of the cable typically uses a left-hand threaded fitting and the other uses right-hand thread. This allows the turnbuckle or tensioning device to tighten both ends simultaneously by rotating in one direction without loosening either anchor.

How do I choose the right diameter?
Match the lag hook diameter to your cable diameter. Common pairings: 1/4" hook for 1/4" cable, 3/8" hook for 5/16" or 3/8" cable, 1/2" hook for 1/2" cable. When in doubt, consult ANSI A300 cabling standards or contact us.

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