Your result
Locking ability |
5 out of 5 |
Reusability |
4 out of 5 |
Worker safety |
4 out of 5 |
Initial cost |
High |
Lifetime cost |
Low |
Locking ability |
5 out of 5 |
Reusability |
4 out of 5 |
Worker safety |
4 out of 5 |
Initial cost |
High |
Lifetime cost |
Low |
The wedge-locking principle uses tension rather than friction to secure the bolted joint in place. All bolted connections will start to loosen during its life cycle. Nord-Lock wedge-locking principle does not only prevent loosening but actually stretches the bolt and prohibits further rotation.
Wedge-locking washers require a higher than average upfront cost than other fasteners, however, they are also the most suitable for critical bolted joints facing vibration and dynamic loads and can be reused – leading to lower long-term costs.
Read the full version in the eBook "Why do bolts loosen?"
(A comparison between common bolt securing options)
Scroll down to access the ebook.
The biggest challenge for a bolted joint, causing it to lose preload and fail, is spontaneous loosening often caused by vibrations. This Junker test shows all 5 nuts stays safely secured! A straight line in the graph indicates a success. Read more about the Junker Test.