Helicoil threaded inserts are precision-engineered coils designed to create durable internal threads in softer materials or repair damaged ones in existing holes. Installing these parts is a straightforward process, but it requires careful attention to detail to ensure that the threads are properly aligned and secured. In this blog, we will explore the steps involved in installing Helicoil threaded inserts, focusing on proper technique and considerations.
Before beginning the installation process, it is essential to have the right tools on hand. Typically, you will need a Helicoil insert, a corresponding drill bit, a tap for creating threads, an installation tool, and possibly tang breaking equipment. Having the correct Helicoil insert in particular is crucial, as using an incorrect size can lead to poor thread engagement and potential failure under load.
The first step in the process involves carefully drilling out damaged or undersized threads to prepare the hole for the insert. It is vital to use a drill bit that precisely corresponds to the outer diameter of the Helicoil insert, as this ensures a clean, uniform hole. Drilling straight is also of utmost importance, as any wobbling or misalignment during this stage can cause an insert to sit unevenly, potentially resulting in improper thread engagement later on. Last but not least, ensuring that the hole is drilled to the correct depth is key, since boring too deep could weaken surrounding material, while going too shallow may prevent an insert from being fully installed.
Once the hole has been drilled to an appropriate size, the next step involves carefully tapping it to create new threads that will accommodate the Helicoil insert. It is often beneficial to apply a small amount of lubricant to a tap, as this reduces friction, prevents excessive wear, and guarantees a smoother cutting process. After a hole has been successfully tapped, it is key to thoroughly remove any chips, metal shavings, or debris from the hole to ensure a clean, smooth surface for the insert to be properly installed without any obstructions.
With the hole properly tapped and cleared of debris, you can now move on to the process of carefully installing the Helicoil insert. Since the insert is tightly wound in its uncompressed state, it must be threaded into the hole using a specially designed Helicoil installation tool to ensure a secure fit. By applying steady and even pressure while turning the tool, the insert will gradually wind into place without resistance. The ultimate goal is to position the top of an insert so that it sits just below the surface of the material being repaired, ensuring a flush and seamless fit.
Once a Helicoil insert has been placed into the threaded hole, the tang—a small metal tab located at the bottom of the coil—must be carefully snapped off. If left in place, the tang could interfere with bolt or screw insertion, leading to improper thread engagement. After the tang has been successfully removed, the installation process is complete, and the repaired threads are ready for use.
If you are currently in the market for threaded inserts, cutting fluids, cables, and other similar items, turn to ASAP Aerospace Hub. Our customers are treated to an unparalleled collection of over 2 billion products that are readily available for purchase today with the benefit of competitive pricing and prompt shipping. We aim to make procurement easy, which is why we offer an online Request for Quote (RFQ) service that allows you to quickly secure tailored fulfillment solutions from our specialists. Keeping this in mind, get in touch with a staff member to see how we can serve as your go-to purchasing partner.
Low Price
Find it fast
Quality guaranteed
Get it fast
All Orders are Fulfilled in the U.S.A.
All shipments must comply with U.S.A export laws.
No exceptions.
The only independent distributor
with a NO CHINA SOURCING Pledge
“We Proudly Support Intrepid Fallen Heroes Fund that serves United States Military Personal experiencing the Invisible Wounds of War : Traumatic Brain Injury (TBI) and Post Traumatic Stress (PTS). Please visit website (www.fallenheroesfund.org) and help in their valiant effort”.
Remember Us When You’re Looking for Competitively Priced, High-Quality Aviation Parts.
Request for Quote