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The HELI-COIL 5403-10 is a complete threaded insert repair kit designed to restore damaged or stripped M10x1.5 metric coarse threads in metal components. The kit covers a range of insert lengths from 10 mm to 20 mm, with a nominal insert length of 15 mm, making it suitable for a variety of thread depths. It includes all tooling required to complete the repair from start to finish: a drill, a tap, an installation tool, and a tang removal tool. Maintenance technicians, machinists, and field service professionals working on machinery, automotive components, or industrial equipment install this kit without the need for additional specialty tooling.
This kit is intended for metric coarse thread repair applications where an M10x1.5 thread has been stripped, cross-threaded, or otherwise damaged beyond direct re-threading. It is used in automotive, heavy equipment, and general industrial maintenance settings. The 18-insert count, supplied as 6 inserts per length across three size lengths, supports multiple repairs from a single kit. Both residential and commercial maintenance environments benefit from the self-contained nature of the kit.
Designed as an OEM-style thread repair solution for any application requiring M10x1.5 metric coarse threaded insert repair, including machinery, automotive components, and industrial equipment with damaged internal threads.
Thread repair insert installation is typically performed by machinists, maintenance technicians, or experienced mechanical tradespeople. Before beginning, de-energize or safely lock out any equipment on which the repair is being performed. Use the included drill and tap in sequence to prepare the bore before driving the insert with the installation tool. Follow the tang removal step as a final procedure to complete the installation and ensure the insert is properly seated.
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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