🛠Thread protector is used to protect the threads of a pipe during transportation and storage. 

🛠Thread protectors are generally manufactured from plastic or steel and can be applied to the pipe manually or automatically (by machine).

🛠Thread protectors are used frequently in the oil and gas industry to protect pipes during transportation to the oil and gas fields. 

🛠Metal thread protectors can be cleaned and re-used, while plastic thread protectors are often collected and either re-used or recycled.

🛠Thread protectors are widely used on firearms to protect threaded barrels. 

🛠Some firearms are manufactured with thread and protectors in the factory, but most thread protectors are part of the aftermarket process of fitting a sound moderator (silencer), muzzle brake or flash hider. 

🛠They protect the threads from mechanical damage and ensure the center lines line up when the muzzle device is replaced.