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The HELI-COIL A4184-10CN150 is a tangless screw-locking helical thread insert designed to install and lock threaded fasteners in drilled and tapped holes. Manufactured from Grade 304 stainless steel with a bright finish, this insert provides corrosion-resistant thread reinforcement and vibration-resistant locking without the use of a tang that requires removal after installation. The M10 x 1.50 metric coarse thread profile and 1-1/2D length ratio make it a standard choice for general industrial, mechanical, and maintenance repair operations where thread integrity under dynamic load is required.
This insert is suited for use in metal fabrication, machinery repair, aerospace maintenance, and industrial assembly applications where stripped or weak threads must be restored or reinforced. The tangless design eliminates the tang-break step during installation, reducing installation time and the risk of loose tang fragments in assemblies. It is appropriate for use by machine shop technicians, maintenance mechanics, and industrial assembly professionals working with metric coarse thread standards.
Designed as an OEM-style thread repair and reinforcement insert for applications using M10 x 1.50 metric coarse threaded fasteners in ferrous and non-ferrous base materials.
Installation requires a properly sized HELI-COIL tap and a compatible tangless insert installation tool; consult the manufacturer tooling guide for correct tap and tool selection. Power down or de-energize any equipment before performing thread repair in active assemblies. The tangless insert design requires a specific driver that engages the internal drive notch rather than a traditional tang-style tool. Follow applicable torque and thread engagement specifications from the equipment manufacturer or relevant industry standards.
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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