E-z Lok 329-3 Thread Locking Insert 10-24 3/8-16 Unc

Product Description

The E-Z LOK 329-3 is a self-lock wall thread locking insert designed to create a secure, vibration-resistant threaded connection in parent materials. It features a 10-24 internal thread and a 3/8-16 external thread, both UNC standard, with a 2B internal thread class of fit and a 2A external thread class of fit. The insert is manufactured from C12L14 carbon steel with a smooth, rolled finish and measures 13/32 inches (0.406 inches) overall length. Installation is performed by licensed mechanical trades or maintenance professionals requiring a reliable threaded repair or reinforcement in metal components.

This insert is suited for applications where a standard threaded hole needs to be converted to accept a 10-24 fastener while utilizing a 3/8-16 external thread for engagement in the parent material. Typical use cases include industrial equipment assembly, machinery maintenance, and structural thread repair in carbon steel or compatible metalwork. The self-lock wall design resists loosening under vibration and dynamic loads without the need for additional locking compounds.

Key Features

• Self-lock wall design resists loosening under vibration
• 10-24 internal thread with 2B class of fit for standard fastener engagement
• 3/8-16 external UNC thread with 2A class of fit for host material installation
• C12L14 carbon steel construction with smooth, rolled finish
• Tensile strength rated at 3,517 pounds
• 13/32 inch overall length (0.406 inches) for compact installation envelope

Compatibility

Designed for use in standard tap installations requiring a 3/8-16 external thread host bore and a 10-24 internal thread output. Compatible with standard tap type installations per UNC thread specifications.

Installation Notes

Installation is typically performed by a machinist or qualified maintenance technician using standard tapping and driving tools appropriate for the host material. The parent material bore must be tapped to 3/8-16 UNC specifications before the insert is driven in place. De-energize or lock out any equipment before performing thread repair or insert installation on powered machinery. Do not exceed the rated tensile load for the insert or the parent material capacity.