Heli-coil 5406-16 Thread Repair Kit M16x1.5 6 Inserts

Product Description

The HELI-COIL 5406-16 is a complete thread repair kit designed to restore damaged or stripped M16x1.5 metric fine threads to full-strength, factory-spec condition. The kit includes a drill, tap, installation tool, tang removal tool, and six wire-thread inserts at a 24-millimeter insert length. Each insert is a coiled, diamond-cross-section wire form that, once installed, provides a hardened, wear-resistant thread form in the parent material. This kit is used by machinists, maintenance technicians, and field repair mechanics who need a reliable, permanent thread repair without replacing the entire part or workpiece.

This kit is suited for repair work on metric fine-threaded bores in automotive, industrial, and general mechanical applications. The M16x1.5 thread specification is common in engine components, suspension hardware, and precision machinery where fine-thread engagement and vibration resistance are critical. The included tooling covers the complete repair sequence in a single package, making it practical for both shop-bench use and field service. Six inserts per kit allow multiple repairs from one purchase.

Key Features

• Repairs M16x1.5 metric fine threads with a 24-millimeter insert length
• Includes drill, tap, installation tool, and tang removal tool for a complete repair sequence
• Six wire-thread inserts included per kit
• Metric fine thread standard for close-tolerance and vibration-resistant applications
• Installation tool part number 4973-16 and tap part number 4976-16 for replacement sourcing
• Insert package part number R3745-16 for insert-only reorder

Compatibility

Designed as a thread repair solution for M16x1.5 metric fine-threaded bores in metal workpieces across automotive, industrial, and mechanical maintenance applications.

Installation Notes

Installation is performed by machinists or maintenance technicians following the included tooling sequence: drill, tap, and insert installation using the provided installation tool, followed by tang removal. Always ensure the parent material is secured and the bore is clean and free of debris before beginning the repair. Follow applicable workplace safety standards and the manufacturer tooling instructions for proper insert seating depth and tang break-off procedure.