3 in. Plain Steel Weldable Surface Hinge with Square Corner Full Surface Fixed Pin (5-Pack)Keep your door closing securely with this 5 pack of 3 in. Plain Steel Weldable Surface Hinge with Fixed Pin. The full mortise configuration prevents prevent sags and creaks. Designed for interior residential doors, this general purpose hinge includes a non removable, fixed pin for added security. Maximum door weight safe working load: 100 lbs. for two hinges, 150 lbs. for three hinges. Fixed pin is non removable for security Surface mount by welding