Recoil 78124 Keylocking Thread Insert M12 X 1.25

Product Description

The RECOIL 78124 is a solid keylocking threaded insert designed to create a permanent, load-bearing internal thread in a parent material. The insert uses an M12 x 1.25 external thread profile and measures 12 mm overall length. Keys driven into the locking slots mechanically anchor the insert flush with or below the host surface, preventing rotation or pull-out under vibration and high-torque fastening. Constructed from carbon steel, the 78124 is suited for use in metal fabrication, heavy equipment repair, and structural thread repair applications. Installation requires a drill, tap, and a compatible key-driving tool from the same system series.

This insert is used in thread repair and reinforcement jobs where a stripped or damaged bore needs a durable, permanent fix. It is appropriate for applications involving high-cycle fastening, vibration-prone assemblies, or situations where a standard helical coil insert would not provide sufficient pull-out resistance. Typical installation environments include industrial machinery, automotive components, and heavy-duty structural assemblies where a solid-body insert with mechanical locking is specified.

Key Features

• M12 x 1.25 external thread for precise fitment in a matching tapped bore
• 12 mm overall length provides substantial thread engagement depth
• Solid keylocking design resists rotation and axial pull-out without adhesive
• Carbon steel construction handles high clamping loads and wear
• Compact profile at 0.500 inches across each dimension allows installation in tight clearance areas

Compatibility

Designed as an OEM-style replacement or new-installation thread reinforcement insert for applications requiring an M12 x 1.25 solid keylocking insert in carbon steel.

Installation Notes

Installation is typically performed by a machinist or qualified maintenance technician using a drill press or milling machine to ensure bore concentricity. The parent material bore must be drilled and tapped to the correct keylocking insert specification before driving the insert. Power down and de-energize any equipment before performing thread repair on live assemblies. Do not attempt to remove a driven keylocking insert by reversing it; solid keylocking inserts are intended to be permanent once installed.