Description

A locknut is a type of fastener that resists loosening under vibrations and torque. They are used to secure mechanical components, such as gears, belt pulleys, and parts of engines and pumps. How they work Locknuts have an internal threaded ring and an outer part with a crown or notches. When tightened, the nut's crown or notches grip the shaft or keyway, preventing the nut from loosening. Some locknuts have a locking mechanism built into the nut, while others use a locking device that engages a keyway or key slot. Types of locknuts Friction lock nuts: Have grooves that require more torque to tighten and loosen. Positive locking nuts: Have locks that allow for quick assembly. Nylon insert lock nuts: Have a nylon ring that squeezes onto the thread to lock the nut in place. All metal lock nuts: Made of metal instead of nylon, so they can be used in applications that get hotter than 200°F. Uses Aerospace: Used to secure components in aircraft and spacecraft Railways: Used to maintain the integrity of fasteners in rail vehicles Mechanical equipment: Used to secure parts in engines, pumps, and other machinery Commercial washing machines: Used to prevent bolts from backing out due to vibrations from the rotating drum