Heli-coil 5403-5 Thread Repair Kit M5x0.8 18 Inserts

Product Description

The HELI-COIL 5403-5 is a complete threaded insert thread repair kit designed to restore damaged or stripped M5x0.8 metric coarse threads to full load-bearing capacity. The kit includes everything needed to complete the repair in one package: a drill, a tap, an installation tool, a tang removal tool, and 18 stainless wire inserts in two length options. Insert lengths range from 5 mm to 10 mm, with the primary insert length at 7.5 mm. This kit is installed by machinists, maintenance technicians, and mechanics working on metal components where internal threads have failed or been cross-threaded.

This kit is suited for repair work on metal assemblies requiring M5x0.8 metric coarse thread restoration. The 18 inserts are split across multiple length options, with 6 inserts per size, providing flexibility for varying material thicknesses. The included tap (part number 2087-5) and installation tool (part number 3747-5) are matched specifically to the M5x0.8 thread specification, ensuring consistent insert placement and proper thread engagement after repair.

Key Features

• M5x0.8 metric coarse thread specification for precise replacement compatibility
• Includes drill, tap, installation tool, and tang removal tool - no additional tooling required
• 18 inserts total across multiple lengths: 5 mm shortest, 10 mm longest, 6 inserts per length
• Primary insert length of 7.5 mm suits standard fastener engagement depths
• Tang removal tool size 5/32 included for clean post-installation finishing
• Insert package part number R1084-5 for reorder reference

Compatibility

Designed as an OEM-style thread repair solution for metal components with M5x0.8 metric coarse internal threads requiring restoration.

Installation Notes

Installation is typically performed by machinists or experienced mechanical technicians. Before beginning, ensure the workpiece is secured and all rotating equipment or systems are de-energized or depressurized as appropriate for the application. Follow the drill-tap-insert sequence using only the included matched tooling to maintain correct thread geometry. Remove the driving tang after insert installation using the included 5/32 tang removal tool to prevent interference with the mating fastener.