Heli-coil 5405-10 Thread Repair Kit M10x1.25 18 Inserts

Product Description

The HELI-COIL 5405-10 is a threaded insert thread repair kit designed to restore stripped or damaged M10x1.25 metric fine threads in metal components. The kit provides a complete solution in a single package, including a drill, tap, installation tool, and tang removal tool alongside 18 stainless wire inserts in multiple lengths. Machinists, mechanics, and maintenance technicians use this kit to bring fastener holes back to full thread strength without replacing the parent part. Insert lengths range from 10 mm to 20 mm, with six inserts supplied at each size, giving the technician flexibility across a range of joint stack-up depths.

This kit is suited for production and field repair work on components with M10x1.25 metric fine threaded holes. Applications span automotive powertrains, industrial equipment, and precision machinery where metric fine thread engagement is critical. The 15 mm nominal insert length represents the mid-range option in the kit and is the most commonly specified depth for M10 fastener joints. The included tap is part number 4944-10, the installation tool is part number 4640-10-1, and the insert package is part number R4649-10.

Key Features

• Complete kit includes drill, tap, installation tool, and 9/32 tang removal tool - no additional tooling required to complete a repair
• 18 inserts total across three length options (10 mm, 15 mm, and 20 mm), with 6 inserts per length
• M10x1.25 metric fine thread standard for precision thread-engagement applications
• Nominally 15 mm insert length as the primary repair depth
• Installation tool part number 4640-10-1 and tap part number 4944-10 included for repeatable, accurate installation

Compatibility

Designed as an OEM-style thread repair solution for components with M10x1.25 metric fine threaded holes where parent material threads have been stripped or damaged.

Installation Notes

Thread repair inserts of this type are installed by qualified machinists or mechanics following standard helical insert procedures. The parent material bore must be drilled and tapped with the supplied drill and tap before insert installation. Always de-energize and secure any equipment before performing thread repair on in-service components. Follow the insert manufacturer's installation procedure using only the included installation tool to avoid insert deformation or incorrect seating depth.