6 Ways to Prevent Nut Loosening

The threaded connection after welding is considered the most reliable, high-quality and economically advantageous. Perhaps its only drawback is the weakening during operation: the nuts are gradually unscrewed from the thread.

In order to prevent this, you can use various methods. For example, use a washer with a grover or a special lock nut.

6 Ways to Prevent Nut Loosening

Consider the most effective and reliable ways to prevent the unscrewing of nuts on a threaded connection.

Nut with lock - involves the use of a nut with a special design, which, after tightening to the thread, does not unscrew back. On the reverse side of this product, the hole is slightly narrowed, which prevents the weakening of the hardware during operation.

Using washers is the easiest, but at the same time not very reliable way to avoid unscrewing the nuts during use.

Grover and washer - a more reliable way to protect the nuts from self-loosening is to fit onto the thread after the Grover washer. This method is most applicable in the automotive industry.

Wedge washer is a special product consisting of several washers at once. The most reliable way to protect the nuts from self-loosening, since the washers are tightened in pairs at the time of installation of the metal product. When using this method, spontaneous unscrewing of the nuts becomes almost impossible.

Anaerobic fixative - is a special fluid that is applied to the thread before screwing the nuts on it. After a while, when the fluid dries, the nut will be as if glued to the thread. However, this method has one significant drawback, which is associated with possible problems when unscrewing the nuts in the future.

Nord washers are unique in their own way and are able to provide good protection of nuts against spontaneous unscrewing. On the front side of such washers are special cams. Spontaneous loosening of nuts with Nord washers is not possible, even with strong vibration.

In addition to special protective equipment, there are simpler ways to protect the nut from unscrewing during operation. So, for example, after the threaded connection is assembled, after the nut, oil paint can be applied to the thread or even, after the washer, remove part of the thread with a file.

However, in this case, even if necessary, loosening the nuts will become impossible.