National Hardware 3-1/2 in. Black Square Corner Door Hinge

The National Hardware 3-1/2 in. Black Square Corner Door Hinge delivers smooth operation and dependable support for residential interior and exterior doors. Crafted from sturdy cold rolled steel with a classic black finish, this hinge provides lasting durability and aesthetic appeal for various doorway installations. Engineered for standard mortise door applications, this hinge features a five-knuckle construction for enhanced strength and stability. It comes complete with matching flat head wood screws for quick, seamless mounting.