What is the function of key locking insert’s latch key ？

The function of a key-locking insert’s latch key is to lock and secure the insert in place within a threaded hole. The latch key is typically a small, protruding element on the insert that engages with the threads of the parent material or the hole into which the insert is installed. It serves the following key functions:

1. Locking Mechanism: The latch key on a key-locking insert is designed to grip and lock into the threads of the parent material, creating a secure connection. This locking mechanism prevents the insert from rotating or coming loose, even when subjected to vibration, shock, or other external forces.

2. Preventing Backout: By engaging with the threads of the parent material, the latch key effectively prevents the insert from backing out or becoming dislodged. This is essential for maintaining the stability and integrity of the threaded connection.

3. Enhancing Thread Strength: The latch key distributes the load over a larger area, reducing stress on individual threads. This not only prevents thread stripping but also enhances the overall strength of the threaded connection.

4. Resistance to Vibration: In applications where vibration is a concern, the latch key plays a vital role in preventing the insert from loosening due to vibrational forces. This is especially important in critical applications where reliable thread strength is required.

In summary, the latch key on a key-locking insert is a critical component that ensures the stability, strength, and reliability of the threaded connection. It locks the insert in place, prevents backout, and enhances the overall thread strength, making it an essential feature in various applications.