A door’s hinges are a crucial component. They give the door strength and stability, and they keep it from slamming shut. Hinges are put on all doors that open inward or outward to ensure smooth functioning. Four pieces make up the majority of door hinges. Leaf, knuckle, pin, and sleeves are examples of these items. The flat component that is screwed to the frame and door is called the leaf. The central section of the knuckle is where the leaves meet. It keeps the door from slamming shut. A key component of the door hinge is the pin. It’s slid into the knuckle with ease. The knuckle is made up of circular sections known as sleeves. Whether you are installing a new door or replacing an old one, hinges plays important role in keeping your door in its right position.