Jergens 215-065952 Keylocking Thread Insert M6x1 M10x1.25

Product Description

The JERGENS 215-065952 is a thin wall keylocking thread locking insert designed to provide a strong, permanent internal thread in a parent material with a larger external thread. This insert accepts an M6 x 1 internal thread and installs into a host bore via an M10 x 1.25 external thread, with an overall length of 10 mm. Manufactured from C1215 carbon steel with a zinc phosphate coating, it meets NAS 1394 standards and carries internal and external thread class-of-fit ratings of 6H and 6G respectively. It is installed by maintenance technicians and manufacturing engineers wherever thread repair or thread reinforcement is required in metal components.

This insert is suited for applications in precision metalworking, aerospace ground support, and industrial machinery where a secure, non-rotating internal thread is needed in a thin-wall boss or casting. The keylocking design uses serrated keys that are driven into the parent material after installation, preventing the insert from rotating or backing out under vibration or dynamic loading. The metric coarse thread standard and compact 10 mm overall length make it appropriate for moderate-depth bores in steel, aluminum, or cast iron components.

Key Features

• M6 x 1 internal thread with 6H class of fit for consistent mating thread engagement
• M10 x 1.25 external thread with 6G class of fit for controlled installation into parent material
• Thin wall design allows use in limited boss diameter situations
• Keylocking retention mechanism resists rotation and pullout under vibration
• C1215 carbon steel construction with zinc phosphate coating for corrosion resistance
• Meets NAS 1394 standard

Compatibility

Designed as an OEM-style replacement or new-installation insert for applications requiring an M6 x 1 internal thread in a parent bore tapped to M10 x 1.25, conforming to NAS 1394 and metric coarse thread standards.

Installation Notes

Installation is performed by machinists or maintenance technicians using the appropriate Jergens installation tool for the insert series. The parent material bore must be drilled and tapped to M10 x 1.25 before the insert is threaded in. After the insert is seated flush, the locking keys are driven into the parent material using a key-driving punch to lock the insert in place. Always verify parent material thread depth and bore diameter against the insert specifications before installation.