What is a threaded threaded insert?

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Les threaded threaded inserts, also known as threaded socket or under the LGC trademark name “Intervis®”, are cylindrical fasteners used to self-create strong and durable threads in a wide variety of materials such as plastics, composites, and soft and medium-hard metals.

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Thanks to their ingenious design, intervis inserts offer a reliable and effective solution for strengthening fasteners in industrial and commercial applications.

Whether for the assembly of plastic parts in the automotive industry or for the attachment of components in composite airplanes, Intervis® threaded inserts guarantee optimal pull-out resistance.

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What is a 3-hole threaded insert?

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LThe 3-hole Intervis threaded insert belongs to the family of self-tapping sockets, its difference from a conventional interscrew insert, it is simply a type of threaded insert with a smaller height.

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The latter has 3 holes in order to easily evacuate the material chips created during the tapping of the material during its installation.

This metal socket has a standardized thread as well as an external thread suitable for applications where heights and thicknesses are smaller.

Generally, the3-hole threaded insert Intervis is used to fix elements in flexible materials such as:

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• The wood
• The plastic
• Composites

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We find 3-hole threaded inserts in a variety of demanding industrial applications such as:

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• In the car
• In the fixing of electronic cards.
• And also the attachment of elements in bikes, skis and snowboards.

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How is an LGC 3-hole threaded insert made?

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First of all, the first step is to gather the customer need, in fact understanding this need is the first key to the success of a project to design the ideal threaded insert for your application.

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The second step is the prototyping phase.

Indeed, LGC is in a position to provide prototypes in order to decide between several inserts designed by the design office or to confront the final product in order to identify differences with customer needs.

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Once the solution has been validated, the industrialization stage comes, the methods office determines the tools adapted to the manufacture of your 3-hole insert, according to the grade and dimensions desired.

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Here is how the manufacture of your 3-hole intervis insert takes place:

The start of the manufacturing process for Intervis® 3-hole threaded inserts is similar to that of our classic intervis self-tapping sockets.

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First step: the external thread of the raw material coil

This stage is called rolling because the intervis passes between 3 rollers. It is the rolling system, which will cold deform the part by compressing it to create its thread.

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Second step: cutting the raw material tube

The tube is cut to the desired length.

It is possible to add chamfers or finishes to the material depending on its future application.

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Step Three: Drilling

A cnc machining machine will drill the part and create these 3 holes characteristic of the 3-hole intervis.

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Final step: tapping

It is the internal thread of the threaded socket.

For this, a cnc machine with a rotating tap will pass inside the part to give it its thread.

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Would you like to learn more about how our threaded insert is made?

Discover our technical guide on Intervis® threaded inserts

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What are the advantages of a 3-hole intervis threaded insert?

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Each type of insert has distinct functionalities, accompanied by advantages both in terms of use and in their respective technical specifications.

THE3-hole threaded insert is a piece that stands out for several notable advantages compared to other types of self-tapping threaded inserts, the 3-hole threaded insert guarantees:

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• Increased strength: The innovative design of the 3-hole threaded insert, with its three holes, gives it exceptional strength in the face of tensile and shear forces. This reinforced resistance ensures a robust and durable attachment, perfectly suited to applications that require maximum safety.
• Durability over time: The 3 holes make it possible to last longer in soft materials, in fact, the holes allow the socket to be distributed in the material, this leads to a reduction in stresses as well as the risk of breakage.