Heli-coil 4937-150 Metric Thread Repair Kit M5-M10 48 Inserts

Product Description

The HELI-COIL 4937-150 is a metric coarse thread repair kit designed to restore stripped or damaged internal threads in metal components. The kit uses stainless steel wire-form threaded inserts that create a permanent, load-bearing thread repair in the parent material. It covers four common metric coarse thread sizes ranging from M5 x 0.80 through M10 x 1.50, making it suitable for a wide range of fastener repair tasks across mechanical, HVAC, and industrial service work. The kit includes a drill, tap, and installation tool for each size, giving the technician everything needed to complete the repair without sourcing additional tooling. Total kit weight is 4 pounds.

This kit is used in residential and commercial service applications where internal threads in aluminum, cast iron, steel, or similar base materials have been stripped or cross-threaded. Typical applications include equipment housings, access panels, mounting flanges, and structural fastener points encountered during HVAC, plumbing, and general mechanical service. With 48 inserts across four sizes, it supports multiple repair jobs before restocking. It is suited for licensed technicians and experienced tradespeople who perform in-field or shop repairs on threaded fastener locations.

Key Features

• Covers four metric coarse thread sizes: M5 x 0.80, M6 x 1.00, M8 x 1.25, and M10 x 1.50
• Includes 48 threaded inserts total across all four sizes
• Kit includes drill, tap, and installation tool - no additional tooling required
• Metric coarse thread standard for compatibility with standard metric fasteners
• Threaded insert design provides a durable, permanent thread repair in the parent material

Compatibility

Designed as an OEM-style thread repair solution for metric coarse threaded fastener applications in metal base materials across a range of mechanical and trade service contexts.

Installation Notes

Installation is performed by a mechanic or service technician using the included drill, tap, and installation tool in sequence. Always power down and de-energize any equipment before beginning thread repair work on live assemblies. Follow the drill size specified for each insert to ensure proper tap engagement and insert fit. Tang removal after installation is not required for this kit, as a tang removal tool is not included.