In what situation might a screw link be preferred over a carabiner?

A screw link is often preferred over a carabiner in situations where a secure connection is essential, particularly in applications involving anchor straps or when triaxial loading is unavoidable. This is due to the nature of a screw link, which offers a more robust locking mechanism than many types of carabiners.

In high-stress scenarios, such as anchoring a system with potential for multiple loading angles, a screw link provides superior stability and strength. The threaded closure helps prevent accidental opening under load, which is crucial when safety is paramount in rescue and climbing operations. Additionally, screw links can be larger and more easily manipulated compared to some carabiners, providing versatility during complex rigging setups.

While carabiners are versatile and widely used, they may not always offer the same level of security in situations where orientations and loading patterns can shift, hence the preference for screw links in these specific scenarios.