What Is The Difference Between Locking And Non-locking Key Locking Inserts?

When it comes to designing and manufacturing mechanical components, the small details can make a big difference. One such detail is the choice between locking and non-locking key locking inserts. Key locking inserts are threaded metal inserts that can be used to reinforce a threaded hole in a material, such as aluminum, steel, or titanium. They are often used in aerospace, military, or automotive applications, as well as for machine tools or robotics.

So, what exactly is the difference between locking and non-locking key locking inserts?

Locking key locking inserts are designed with one or more tangs or keys that engage with the threads of the tapped hole, creating a mechanical lock between the insert and the material. This lock provides a strong resistance to loosening due to vibration or thermal cycling, making it ideal for high-stress applications. The tangs or keys are typically made of stainless steel, and they are installed by driving them into the material with a special tool. Once installed, the insert becomes a permanent part of the material, and it cannot be removed easily.

Non-locking key locking inserts, on the other hand, do not have tangs or keys. They rely on the friction between the threads of the insert and the material to resist loosening. Non-locking inserts are typically used in applications where the stress is relatively low, and where the risk of loosening is minimal. They can be installed and removed multiple times without damaging the material, making them more versatile than locking inserts.

So, which type of key locking insert should you choose? The answer depends on the specific needs of your application. If you require a strong and permanent lock, locking key locking inserts are the way to go. If you need more flexibility and the ability to remove and re-install the insert, non-locking key locking inserts are the better choice.

In any case, it is essential to use high-quality key locking inserts and to follow the manufacturer's instructions for installation and maintenance. This will ensure that your mechanical components remain secure and reliable over the long term, reducing the risk of costly and potentially dangerous failures.

In summary, the difference between locking and non-locking key locking inserts comes down to the presence or absence of tangs or keys that create a mechanical lock. Locking inserts provide strong resistance to loosening, while non-locking inserts offer more flexibility and ease of installation. Ultimately, the choice of insert depends on the specific needs of your application, and it is crucial to use high-quality inserts and follow the manufacturer's instructions for optimal performance.