E-z Lok 329-7 Thread Locking Insert 7/16-14 Unc

Product Description

The E-Z LOK 329-7 is a self-lock wall thread locking insert designed to create strong, vibration-resistant threaded connections in softer or damaged parent materials. Machined from C12L14 carbon steel with a smooth, rolled finish, this insert features a 7/16-14 UNC internal thread and a 5/8-11 UNC external thread. The overall length is 21/32 inches (0.656 inches decimal). With a tensile strength of 17,201 pounds, the 329-7 is built for demanding mechanical assemblies where thread integrity is critical. Installation is performed using a standard tap, making it a straightforward add for machinists, maintenance technicians, and MRO professionals.

This insert is suited for applications where a parent material requires reinforced threading or where stripped threads need to be restored to full load-bearing capacity. Common install scenarios include industrial machinery, structural assemblies, and equipment requiring reliable UNC thread engagement. The self-lock wall design provides resistance to loosening under vibration and dynamic loading without requiring thread-locking compounds.

Key Features

• 7/16-14 UNC internal thread with 2B class of fit for standard fastener compatibility
• 5/8-11 UNC external thread with 2A class of fit for secure parent-material engagement
• Self-lock wall design resists loosening under vibration without adhesives
• Tensile strength rated at 17,201 pounds for high-load applications
• C12L14 carbon steel construction with smooth, rolled finish
• Installs using a standard tap - no specialty tooling required

Compatibility

Designed as an OEM-style thread locking insert for applications requiring a 5/8-11 UNC external thread drilled and tapped hole with a 7/16-14 UNC internal thread requirement.

Installation Notes

Installation is typically performed by a machinist or qualified maintenance technician. The parent material must be drilled and tapped to the correct 5/8-11 UNC specification before the insert is driven in. Ensure the work piece is secured and de-energized or depressurized as appropriate for the assembly before beginning thread repair or insert installation. Follow the equipment manufacturer's torque specifications for the fastener engaging the internal thread after insert installation.