E-z Lok 650-8 Thread Locking Insert M8 X 1.25 1/2-13

Product Description

The E-Z LOK 650-8 is a standard wall thread locking insert designed to convert or repair threaded holes in metal assemblies. It features an M8 x 1.25 internal thread and a 1/2-13 external thread, allowing it to be driven into a tapped hole to provide a durable, locked-in internal thread. Manufactured from C12L14 carbon steel with a smooth rolled finish, this insert delivers reliable thread engagement in applications where vibration or repeated fastener cycling would otherwise degrade the base material. Overall length is 31/64 inches (0.484 inches). Installation is performed by trade professionals in manufacturing, maintenance, and repair environments.

This insert is suited for use in metal components requiring a metric internal thread where the host material has been damaged, stripped, or originally tapped to a larger size. The M8 x 1.25 internal thread conforms to Metric Coarse and Metric Fine thread standards. The 1/2-13 external thread is driven into the prepared host hole using a standard tap. Typical applications include machinery repair, equipment fabrication, and industrial assembly work where thread integrity is critical.

Key Features

• M8 x 1.25 internal thread with Class 2B fit for standard metric fastener engagement
• 1/2-13 external thread with Class 2A fit for secure installation into host material
• Standard wall design compatible with standard tap preparation
• C12L14 carbon steel construction for strength and machinability
• Smooth rolled finish for clean installation and consistent thread form
• Meets Metric Coarse and Metric Fine thread standards

Compatibility

Designed as an OEM-style replacement or new-installation thread locking insert for metal assemblies requiring an M8 x 1.25 internal thread in a 1/2-13 tapped host hole using a standard tap.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician. The host material must be tapped to 1/2-13 using a standard tap before the insert is driven in. Ensure the host hole is clean and free of debris before installation. Follow the insert manufacturer's installation tooling recommendations to avoid damaging the insert or surrounding material.