Heli-coil 5407-8 Pipe Thread Repair Kit 1/2-14

Product Description

The HELI-COIL 5407-8 is a pipe thread repair kit designed to restore damaged or stripped 1/2-14 pipe threads to original specification. The kit includes a drill, a tap (part number 328-8), an installation tool (part number 3371-8), a tang removal tool, and 10 stainless steel wire thread inserts. It is used in plumbing, HVAC, and mechanical service applications where pipe fittings thread into cast iron, aluminum, or other base materials. Licensed plumbers, pipefitters, and HVAC technicians are the primary installers. The complete tooling in one kit reduces the need to source components separately.

This kit is suited for field and shop repairs on pipe connections using the 1/2-14 thread form, which is common in residential and light commercial plumbing and gas piping systems. Typical applications include repairing threaded ports on manifolds, valve bodies, pipe flanges, and equipment housings where the internal pipe thread has been damaged by cross-threading, overtorque, or corrosion. The 10-insert count supports multiple repairs from a single kit.

Key Features

• Restores 1/2-14 internal pipe threads to original fit and function
• Includes drill, tap (328-8), installation tool (3371-8), and tang removal tool - no separate sourcing required
• 10 thread inserts included per kit
• Kit type: Pipe Thread Repair - external thread size matches insert thread size at 1/2-14
• Suitable for repairs in metal base materials common in plumbing and HVAC equipment

Compatibility

Designed for use in any application requiring repair of a 1/2-14 internal pipe thread in a metal base material. Use with the included tap and installation tool for proper insert installation.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified HVAC technician familiar with thread repair procedures. Before beginning, isolate and depressurize the affected line and shut off any associated gas or fluid supply per applicable IFGC or IPC requirements. Use the included drill and tap in the correct sequence before driving the insert with the installation tool. Remove the tang with the included tang removal tool after installation is complete.