Outspoken About Wedge Locking Washers and Junker Test

Loosened nuts and bolts during operation have been a problem since their invention. Wedge Locking Washers are currently considered in professional circles to be one of the most reliable locking system for bolted joints. In this sense, they are presented not only by manufacturers, but also by distributors. They gained their popularity mainly after the spread of the so-called Junker vibration test, which is used to check the reliability of locking systems. This vibration test, according to DIN 65151, is considered the most severe vibration test for bolted connections. To testify to the complete properties of this locking method and to help designers is the task of this contribution. It is important to note that the article is of a strictly technical nature and has no ambition to interfere with the distribution network.