E-z Lok 329-1018 Thread Locking Insert 5/8-11 Unc

Product Description

The E-Z LOK 329-1018 is a self-lock wall thread locking insert designed to create a secure, permanent internal thread in materials that require reinforced fastening. Manufactured from C12L14 carbon steel with a smooth rolled finish, this insert accepts a 5/8-11 UNC internal thread and installs via a 7/8-9 UNC external thread. The overall length is 1.125 inches. It is installed using a standard tap and is suited for applications where vibration resistance or thread repair is needed in metal assemblies. Licensed tradespeople working in industrial, HVAC equipment, or mechanical fabrication environments are the primary installers.

This insert is used in applications requiring a durable threaded connection in carbon steel substrates or assemblies subject to load and vibration. The self-lock wall design mechanically resists loosening without the need for adhesives or additional locking compounds. It is appropriate for production and field repair scenarios where thread integrity is critical and a standard tap is available for installation.

Key Features

• 5/8-11 UNC internal thread with a 2B class of fit for reliable fastener engagement
• 7/8-9 UNC external thread with a 2A class of fit for precise installation into tapped bore
• Self-lock wall design provides mechanical resistance to vibration-induced loosening
• C12L14 carbon steel construction offers good machinability and strength
• 1.125 inches overall length suits standard-depth installation requirements
• Smooth rolled finish - installs with a standard tap, no special tooling required

Compatibility

Designed as an OEM-style replacement or new-installation thread locking insert for applications requiring a 5/8-11 UNC internal thread installed via a standard 7/8-9 UNC tapped bore.

Installation Notes

Installation is performed by tradespeople or machining technicians using a standard tap sized for the 7/8-9 UNC external thread. Power down and de-energize any associated equipment before servicing threaded connections in live assemblies. Ensure the tapped bore is clean and free of debris before driving the insert to full seating depth. Follow applicable mechanical codes and torque specifications for the fastener used in the completed assembly.