This refers to a specific type of fastening hardware commonly available at a major home improvement retailer. It is characterized by its metric sizing (M18), thread pitch (1.5 mm), and self-locking feature. Such a fastener is frequently used in applications where secure fastening is crucial and loosening due to vibration or other factors must be prevented. An example application would be securing components in machinery or automotive assemblies.
The significance of this type of nut lies in its ability to maintain joint integrity over time, reducing the risk of failure and improving overall safety. The self-locking mechanism, often achieved through a nylon insert or deformed threads, provides a consistent clamping force. Historically, the need for reliable fastening solutions has driven the development and refinement of such components, particularly in industries where equipment operates under demanding conditions.