What is a Helicoil?

A HeliCoil is a coiled-wire type of thread repair insert used to create internal screw threads to accommodate standard-sized fasteners.

Some of the advantages of using a Helicoil include…

Thread Size Range
A large range of available thread diameters allow for use in a variety of thread repair applications.
According to published data, inserts are available as small as a #2 screw size, and as large as 1 1/2″ diameter. Corresponding metric sizes are also available.

Thread Type Selection
Inserts are available in various thread type and pitch configurations including UNC, UNF, Metric Coarse Pitch and Fine Pitch, UNEF, UNS, and Pipe Thread.
Each insert is offered in several different length options.

Material Options
Several material choices are available including Stainless Steel, Phosphor Bronze, Inconel X, Nitronic 60, and Titanium. A selection of finish coatings is also offered.


Thread Repair Inserts –

As the name suggests, a thread insert is a part that is installed – or inserted – into a workpiece. When properly installed, inserts provide high-quality, wear resistant, permanent internal threads.

In many situations, thread inserts are ideal to repair stripped threads. Thread inserts are also commonly used in new part designs because of the many benefits that they offer.

Thread inserts are supplied in a variety of configurations. However, there are basically two general categories of inserts…

  1. Helical Coiled-Wire Thread Insert
  2. Solid Body Thread Insert

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