|Material:||A1 Stainless Steel|
|Thread Type:||Metric Coarse|
Self locking nuts work by using increased friction between the threads of the two mating faces to cause a slight distortion of the threads. They are frequently used in areas where vibration is experienced.
Self locking nuts can be re-used, but only a few times before they lose their inherent locking qualities.
Stiff nuts, jam nuts and bent beam nuts are all terms that are used to describe self-locking nuts.
Metric is the most common thread type in production today. Usually specified as M then a number x another number. This signifies the thread diameter and the length of the fastener.
For example, M4 x 30 means that the major thread diameter (the external distance across the outside of the thread) is 4mm and the length is 30mm. Length is usually measured from the underside of the fastener head.