Identify four locking devices used on threaded work to stop it from loosening(4

Lock Nuts: These are the most common locking devices. They are designed to resist loosening under vibrations and torque. They can be used in high-stress and high-vibration environments.

Thread-locking fluid: This is a thin, single-component adhesive, applied to the threads of fasteners such as screws and bolts to prevent loosening, leakage, and corrosion.

Lock Washers: These are used to prevent nuts and bolts from backing out. They are usually made of metal and are of two types: split (helical spring) and tooth (star).

Jam Nuts: These are tightened against the main nut, preventing it from loosening. They are used when a standard nut will not fit.