E-z Lok 450-5 Thread Locking Insert M5 X 0.8 M8 X 1.25

Product Description

The E-Z LOK 450-5 is a self-locking threaded insert designed to create a secure, vibration-resistant internal thread in materials that require reinforced fastening points. It features an M5 x 0.8 internal thread and an M8 x 1.25 external thread, with an overall length of 7.5 mm. Manufactured from C12L14 carbon steel with a smooth, rolled finish, the insert delivers a tensile strength of 4,108 pounds. It is installed by trade professionals in applications where standard threads are insufficient or where repair of stripped threads is needed in metal assemblies.

This insert is suited for use in metal fabrication, mechanical assemblies, and maintenance or repair scenarios across HVAC, plumbing, electrical, and general industrial environments. The self-lock wall design resists loosening under vibration and thermal cycling, making it appropriate for equipment panels, enclosures, and structural brackets. Installation follows metric coarse thread standards using a standard tap. The internal thread class of fit is 6H and the external thread class of fit is 6G, meeting standard metric tolerancing for consistent fitment across compatible hardware.

Key Features

• M5 x 0.8 internal thread with 6H class of fit for precise metric fastener engagement
• M8 x 1.25 external thread with 6G class of fit for secure installation into parent material
• Self-lock wall design resists loosening under vibration and thermal cycling
• 4,108-pound tensile strength for reliable load-bearing performance
• C12L14 carbon steel construction with smooth, rolled finish
• Compatible with standard tap installation - no special tooling required

Compatibility

Designed as an OEM-style threaded insert for use in metal assemblies requiring a metric coarse M5 x 0.8 internal thread installed via an M8 x 1.25 external thread profile.

Installation Notes

Installation is typically performed by a machinist, maintenance technician, or experienced trade professional. The parent material must be tapped to M8 x 1.25 using a standard tap before the insert is driven in. Power down and de-energize any associated equipment before working on assemblies containing this insert. Follow applicable torque and fastener guidelines from the equipment manufacturer for the specific assembly.