Heli-coil 5401-05 Thread Repair Kit 5-40 Unc 36 Inserts

Product Description

The HELI-COIL 5401-05 is a complete thread repair kit designed to restore damaged or stripped internal threads to factory-standard strength. The kit centers on a coiled wire threaded insert sized for #5-40 UNC threads with an insert length of 0.188 inches. It includes all tooling required to complete the repair in one package: a wire drill, a tap, an installation tool, and a tang removal tool. Licensed HVAC technicians, electricians, machinists, and maintenance mechanics use this kit when a tapped hole in aluminum, cast iron, or soft metal has failed and cannot hold a fastener reliably. No separate tooling order is required to complete the repair.

This kit is suited for light-duty thread repair applications in residential and commercial settings wherever #5-40 UNC threaded fastener holes have been damaged through over-torque, cross-threading, or corrosion. The 36-insert count supports multiple repairs from a single kit, with 12 inserts provided at each of three length configurations ranging from 0.125 inches to 0.250 inches. The shortest insert measures 0.125 inches and the longest 0.250 inches, giving the installer flexibility to match insert length to material thickness. This kit meets the UNSPSC classification 27112810.

Key Features

• Complete kit includes drill (wire size #29, 0.136 inches decimal), tap (part number 05CPB), installation tool (part number 7551-05), and tang removal tool (3/32)
• #5-40 UNC thread standard for compatibility with unified coarse-thread fasteners
• 36 threaded inserts total - 12 inserts at each of three length sizes from 0.125 to 0.250 inches
• Standard insert length of 0.188 inches suits most common repair scenarios
• No additional tooling required - all components needed for a complete repair are included
• Insert package part number R1185-05 for replacement insert ordering

Compatibility

Designed as an OEM-style thread repair solution for any application requiring #5-40 UNC internal thread restoration in metallic base materials.

Installation Notes

Thread repair inserts of this type are installed by qualified mechanics or tradespeople following standard hand-tool procedures. Before beginning, de-energize or isolate the equipment being serviced according to applicable lockout/tagout procedures. Drill the damaged hole to the specified size using the included wire drill, tap the hole with the included tap, then drive the insert with the installation tool. After seating the insert, remove the drive tang with the included tang removal tool using a sharp downward strike.