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The HELI-COIL 5404-10 is a complete threaded insert repair kit designed to restore damaged or stripped M10x1 metric fine threads in metal components. The kit provides everything needed to bring a worn threaded bore back to full holding strength without replacing the parent part. It includes a drill, tap, installation tool, tang removal tool, and 18 wire thread inserts at 15 millimeters insert length. Machinists, maintenance technicians, and field service professionals use this kit on engines, machinery housings, and structural assemblies where thread integrity is critical.
This kit is suited for metric fine thread repair applications in both shop and field environments. The M10x1 thread standard makes it appropriate for use on precision fastener locations where coarse-thread variants are not acceptable. Each kit includes six inserts per size length across three length groupings, for a total of 18 inserts. The included installation tool is part number 4835-10, the tap is part number 4984-10, and the insert package carries part number R4255-10. The tang removal tool accepts a 9/32 driver.
Designed for repair of M10x1 metric fine threaded bores in metal components across industrial, automotive, and mechanical maintenance applications.
Thread repair should be performed by a qualified machinist or maintenance technician familiar with insert installation procedures. Shut down and de-energize any equipment before beginning thread repair work. Drill and tap the damaged bore to the specified insert size using the included tooling, then drive the insert to the correct depth using the installation tool. Use the 9/32 tang removal tool to break off the drive tang after installation is complete.
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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