How does key locking insert work？

Key locking insert, also known as a keensert or keysert, is a type of fastener that is used to provide a threaded hole in a material that may not have sufficient strength to support threads directly or where threads need to be reinforced for added durability. These inserts are often used in metal, plastic, or other materials to create strong, reliable threads for screws, bolts, or other fasteners. Here’s how a key-locking insert works:

1. Design and Construction:
A key-locking insert typically consists of a cylindrical metal component with internal and external threads.
The external threads on the insert match the threads of the fastener you want to use, such as a screw or bolt.
The internal threads are designed to create a secure and permanent thread within the material you are installing the insert into.

2. Installation Process:
To install a key-locking insert, you’ll first need to drill a hole into the material to the size specified for the insert.
The insert is then threaded into the hole using a special tool or installation kit.
As you thread the insert into the hole, it grips the surrounding material tightly due to its unique design.
This gripping action is often facilitated by locking keys or coils on the insert’s internal threads. These keys or coils embed themselves into the material, providing a secure and load-bearing threaded connection.

3. Benefits:
Key-locking inserts offer several advantages, such as increased thread strength and resistance to vibration and shock.
They can be used to repair damaged threads in materials or create threads in materials that do not naturally support threading, like some plastics or soft metals.
The inserts can be used in a wide range of applications, including aerospace, automotive, manufacturing, and construction, where reliable threaded connections are essential.
Permanent Installation:

Once a key-locking insert is installed, it is typically considered a permanent part of the assembly. Attempts to remove it can be difficult and may result in damage to the surrounding material.
In summary, a key locking insert works by providing a strong and reliable threaded connection in materials that would not otherwise support threads. They are commonly used in applications where secure and permanent threaded connections are necessary for structural integrity and reliability.