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The HELI-COIL 18551-2-15 is a front end assembly designed for use with power installation tools when installing threaded inserts. It is engineered for 8-32 UNC thread size and provides a secure, repeatable interface between the power driver and the insert during installation. This assembly is a working component of a larger power tool system and is replaced or swapped when switching between thread sizes or when the end assembly shows wear. Threaded insert work is typically performed by machinists, maintenance technicians, and field mechanics working with stripped or damaged threads in metal components.
This front end assembly suits applications where high-volume or repeated thread insert installation is required. It is compatible with both bulk inserts and strip feed inserts in 8-32 UNC configuration, making it a practical component for production environments, repair shops, and field service operations where power-driven insert installation replaces hand-tool methods. The 8-32 UNC thread standard is common in light mechanical assemblies, electronics enclosures, and precision equipment where thread repair is frequently needed.
Compatible with bulk inserts and strip feed inserts in 8-32 UNC thread size. Designed as a front end assembly component for HELI-COIL power installation tool systems.
Installation of this front end assembly should be performed by a qualified machinist or maintenance technician familiar with threaded insert power tooling. Ensure the power tool is fully de-energized and disconnected from any power source before swapping or attaching the front end assembly. Confirm that the thread size of the front end assembly matches the inserts being used before beginning work. Follow the tool manufacturer's assembly instructions and torque guidance for securing the front end assembly to the drive unit.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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