National Hardware 4 in. Plain Steel Surface Door Hinge

The National Hardware 4 in. Plain Steel Surface Door Hinge is engineered for durable, dependable operation in heavy-duty welding and fabrication applications. Built with high-strength plain steel construction, this hinge is designed for direct surface mounting by welding onto steel doors, gates, and frames. Featuring a 5-knuckle design with a non-removable tight pin, this hinge accommodates both right-handed and left-handed installations. Its blank, unfinished steel surface allows for custom finishing, painting, or secure weld attachment to suit various agricultural, commercial, and residential utility projects.