Heli-coil 5407-12 Pipe Thread Repair Kit 3/4-14

Product Description

The HELI-COIL 5407-12 is a pipe thread repair kit designed to restore damaged or stripped 3/4-14 internal pipe threads to original specification. The kit provides everything needed to complete the repair in a single package: a drill, a tap (part number 328-12), an installation tool (part number 3371-12), a tang removal tool, and 10 stainless steel wire thread inserts. It is used in plumbing, HVAC, and industrial piping systems wherever a threaded pipe connection has failed and replacement of the entire fitting or housing is impractical. Licensed plumbers, pipefitters, and HVAC technicians are the primary installers.

This kit is suited for field and shop repairs on threaded pipe connections in residential and light commercial applications. The 3/4-14 thread size is a common NPT (National Pipe Thread) dimension found on fittings, manifolds, valves, and equipment housings across plumbing and HVAC systems. The included 10 inserts allow multiple repairs from a single kit, making it practical to stock on a service vehicle or in a shop environment.

Key Features

• Complete kit includes drill, tap (328-12), installation tool (3371-12), and tang removal tool
• 10 thread repair inserts per kit for multiple repairs
• Repairs 3/4-14 internal and external pipe threads
• Restores stripped or cross-threaded pipe connections without replacing the host fitting or housing
• Consolidated kit reduces the need to source tools and inserts separately

Compatibility

Designed for repair of 3/4-14 pipe threads. Compatible with applications using 3/4-14 NPT-style threaded connections in plumbing, HVAC, and industrial piping systems.

Installation Notes

Thread repair should be performed by a licensed plumber, pipefitter, or qualified HVAC technician. Shut off and depressurize the affected line before beginning any thread repair work. Follow the drill, tap, and insert installation sequence as specified in the kit instructions. Verify thread engagement and pressure integrity before returning the system to service.