Heli-coil 5407-4 Pipe Thread Repair Kit 1/4-18

Product Description

The HELI-COIL 5407-4 is a pipe thread repair kit designed to restore damaged or stripped 1/4-18 pipe threads in metal components. The kit provides a complete solution for re-threading applications where the original thread has been compromised, eliminating the need to replace the entire part. It includes a drill, tap, installation tool, tang removal tool, and 12 stainless steel-style wire thread inserts. Licensed HVAC technicians, plumbers, and pipefitters use this kit when servicing threaded ports on valves, fittings, manifolds, and equipment housings where a leak-free pipe thread connection must be maintained.

This kit is suited for residential and light commercial service work where 1/4-18 NPT-style pipe threads are common. Typical applications include repairing stripped ports on HVAC service valves, refrigerant manifold blocks, gas valve bodies, and plumbing fittings. The 12-insert count supports multiple repairs per kit, making it practical for shop use or field service trucks. Installation tool part number 3371-4 and tap part number 328-4 are included, so no additional tooling is required to complete the repair.

Key Features

• Repairs 1/4-18 pipe threads in stripped or damaged ports
• Includes drill, tap, installation tool, and tang removal tool for a complete repair workflow
• 12 thread inserts per kit for multiple repairs
• Installation tool part number 3371-4 and tap part number 328-4 included
• No external tooling required beyond the contents of the kit

Compatibility

Designed for use on metal components with 1/4-18 pipe thread ports. Compatible with applications requiring an external thread size of 1/4-18.

Installation Notes

Thread repair work should be performed by a qualified technician familiar with pipe thread standards and the specific system being serviced. Before beginning, isolate and depressurize the affected line or component, and ensure all fluid or gas supply is shut off per applicable codes such as IFGC or IPC. Use the included drill and tap in sequence before driving the insert with the installation tool, then remove the tang with the included tang removal tool. Do not attempt thread repair on a pressurized or energized system.