E-Z Coil™ Helical Coil Inserts

E-Z Coil™ inserts — also known as wire or helical threaded inserts — quickly repair or reinforce tapped holes in soft metals. Made from 18-8 stainless steel wire, these helical coil inserts are corrosion resistant and can withstand temperatures up to 800°F.

E-Z Coil™ helical insert coils are manufactured by forming the stainless steel wire into a diamond shape and then winding it into a spring. Before being installed, the insert diameters of these stong internal threads are larger than the tapped hole. During installation, the insert diameter of the helical coil insert is reduced, allowing the insert to thread into the hole. Once properly installed, the radial pressure of the released insert holds the insert firmly in place. View our resources on E-Z LOK™ product installation for more information or check out the rest of our threaded inserts for metal today.

E-Z Coil™ Helical Insert Features:

  • Quickly repair damaged threads in soft metal
  • Protect tapped holes from stripping and wear
  • Made from corrosion resistant 18-8 stainless steel

A Closer Look at Helical Coils

Helical coil inserts come in handy when you need to repair or reinforce tapped holes in soft metals. They're designed to grab the walls of the soft metal and be inserted into place. This coil-wired type of insert creates internal screw threads to accommodate standard-sized fasteners.

What are the benefits of using helical coils?

E-Z LOK's helical coil selection can help you quickly repair or reinforce tapped holes in soft metals. Other benefits include:

  • Corrosion resistance
  • Ability to withstand temperatures of up to 800°F.
  • Protection from stripping and wearing.

How do I select the right size helical insert?

When it comes to choosing a helical insert, it's important to select one at least as long as the screw diameter. If you want increased strength, we recommend selecting a longer helical insert. Keep in mind, the exact length you select will depend on your application. For example, steel is a hard material and doesn't require long inserts. Aluminum, on the other hand, is softer and needs longer inserts.

What is an STI tap?

Also known as a "Screw Thread Insert tap," an STI tap is used during the installation process of some types of threads like our helical coils. It's important to note that an STI tap is different from a standard fastener thread tap. As a result, we don't recommend using both taps interchangeably.

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