låsmut

Låsmut is a Swedish term that translates to "lock nut" in English. It refers to a type of fastener designed to resist loosening under vibration and torque. This resistance is achieved through various mechanical means incorporated into the nut's design.

One common type of låsmut is the nylon insert lock nut, also known as a nyloc nut. This nut has a plastic collar, typically made of nylon, at its top. When a bolt is threaded through the nut, the nylon deforms and creates friction against the bolt's threads, preventing it from backing out.

Another variant is the prevailing torque lock nut. These nuts are designed to require a certain amount of force to turn, even before they are fully seated against the mating surface. This is often achieved through an ovalized portion of the nut or an integrated locking element that deforms when tightened. Examples include distorted thread lock nuts and all-metal lock nuts with deformed threads.

Free spinning lock nuts are a less common type, but they still offer some locking capability. They typically have a washer-like component that spins freely until the nut is tightened, at which point it engages with the mating surface to create a locking action.

Låsmut are widely used in applications where loosening due to vibration or stress is a concern, such as in machinery, vehicles, and construction. They provide a reliable and cost-effective solution for ensuring the integrity of bolted joints.