Twistlock for ultra-fast container locking

The Semi Automatic Twistlock IF-55 is the solution when you need to quickly lock two stacked containers securely together. Thanks to the automatic locking mechanism, it saves valuable time during loading and unloading. You only need to position it—locking happens automatically.

Automatic locking upon placement

Unlike manually operated variants, the IF-55 twistlock locks automatically as soon as it is placed into a container corner. This enables a faster and more efficient working method, especially when multiple containers must be stacked. Unlocking is done using a stainless-steel pull cable with an orange button, giving you full control over the release process.

Placement from above and below possible

The IF-55 can be attached to the underside of the upper container as well as to the top side of the lower container. In both cases, the smart construction ensures a safe, stable connection. When placed, the point automatically snaps into the locked position without requiring manual intervention.

Efficient unlocking using stainless-steel pull mechanism

Releasing containers is simple. By pulling the stainless-steel cable to the correct position, the twistlock disengages from the upper or lower container. The IF-55 remains inside the container when you lift it, ready for reuse at the next loading cycle.

Made for long-term use under harsh conditions

The housing of the IF-55 is made of high-quality galvanized steel and resistant to corrosion, salt, impact and temperature fluctuations. Both the tips and the internal parts are robustly coated, ensuring years of reliable operation even in maritime environments.

Work faster, make fewer mistakes

The IF-55 is ideal for applications where speed and reliability are crucial, such as ports, terminals and large logistics hubs. Its semi-automatic mechanism makes the twistlock extremely efficient in terms of time and safety. It prevents incorrect placement because the mechanism locks automatically.

Technical support and documentation available

You can download the technical drawings in PDF and 3D .stp format for the IF-55 on the Navacqs website. Our specialists are available to advise you on the correct use and selection for your stacking operations.