E-z Lok 329-8 Thread Locking Insert 1/2-13 Unc Carbon Steel

Product Description

The E-Z LOK 329-8 is a self-locking threaded insert designed to create a secure, permanent internal thread in softer or compromised base materials. It features a 1/2-13 UNC internal thread and a 3/4-10 UNC external thread, with an overall length of 21/32 inches (0.656 inches). Manufactured from C12L14 carbon steel with a smooth, rolled finish, this insert delivers a tensile strength of 23,290 pounds. It is installed using a standard tap and is suited for applications requiring a reliable thread repair or thread reinforcement solution in metal assemblies.

This insert is used in industrial, mechanical, and maintenance applications where a stronger internal thread is needed than the base material can provide on its own. The self-lock wall design resists rotation and loosening under vibration and dynamic load. Fabricators, maintenance mechanics, and field service technicians working with carbon steel assemblies are the primary installers. The 3/4-10 external thread drives into a tapped hole in the host material, leaving the 1/2-13 internal thread exposed for fastener engagement.

Key Features

• 1/2-13 UNC internal thread with Class 2B fit for standard fastener compatibility
• 3/4-10 UNC external thread with Class 2A fit for installation into host material
• Self-lock wall design resists loosening under vibration and cyclic loading
• C12L14 carbon steel construction with smooth rolled finish
• Tensile strength rated at 23,290 pounds
• Compact 21/32-inch overall length suits space-constrained assemblies

Compatibility

Designed as an OEM-style threaded insert for use in metal base materials tapped with a standard 3/4-10 UNC tap.

Installation Notes

Installation is performed by machinists or maintenance mechanics using a standard 3/4-10 UNC tap to prepare the host material bore. Power down and de-energize any equipment before performing thread repair on in-service components. Use the appropriate E-Z LOK installation tool or a hex key driver to drive the insert flush or slightly below the host material surface. Do not overtighten or cross-thread during installation, as this can compromise the locking wall engagement.