Unlubricated hinges are a type of hinge that is not equipped with glide or ball bearings to facilitate the movement of a door or other moving object. Instead, unlubricated hinges use a simple metal axle to facilitate the movement of the object. Unlubricated hinges are usually made of metal, such as steel, stainless steel, or aluminum, and can be coated with a protective layer to prevent rusting. They are often used for doors or other objects that are not heavy or not heavily used, as they do not move as smoothly as lubricated hinges and have more friction. Unlubricated hinges are also easy to install and replace and are available in various sizes and styles to meet the needs of different applications.