E-z Lok 329-10 Thread Locking Insert 5/8-11 Unc Self-lock

Product Description

The E-Z LOK 329-10 is a self-locking threaded insert designed to create or restore strong, vibration-resistant internal threads in metal assemblies. It features a 5/8-11 UNC internal thread and a 7/8-9 UNC external thread, with an overall length of 11/16 inches (0.687 inches decimal). Manufactured from C12L14 carbon steel with a smooth, rolled finish, this insert is engineered for high-load applications where thread pullout resistance is critical. Tensile strength is rated at 37,404 pounds, making it suitable for demanding structural and mechanical fastening tasks. Licensed machinists, maintenance technicians, and industrial assemblers work with this type of insert in production and repair environments.

This insert is used in metalworking and mechanical assembly applications where a standard tap is employed to prepare the host material. It is suited for residential and commercial equipment repairs, industrial machinery, and structural assemblies requiring a reliable UNC thread form. The self-lock wall design provides resistance to loosening under vibration and dynamic loading. It is installed using a standard tap compatible with the 7/8-9 external thread profile.

Key Features

• 5/8-11 UNC internal thread with Class 2B fit for standard fastener compatibility
• 7/8-9 UNC external thread with Class 2A fit for consistent installation torque
• Overall length of 11/16 inches (0.687 inches) for compact installation depth
• C12L14 carbon steel construction rated to 37,404 pounds tensile strength
• Self-lock wall design resists loosening from vibration and dynamic loads
• Smooth, rolled finish for clean thread engagement during installation

Compatibility

Designed as an OEM-style threaded insert for metal assemblies requiring a 5/8-11 UNC internal thread installed via a standard 7/8-9 tap.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using standard tapping equipment sized for the 7/8-9 external thread. Ensure the host material bore is clean, properly sized, and free of debris before driving the insert. Power down and de-energize any associated equipment before performing thread repair work on installed assemblies. Follow applicable industry and facility standards for fastener installation in structural or load-bearing applications.