A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation all other translations or rotations being prevented, and thus a hinge has one degree of freedom. Hinges may be made of flexible material or of moving components. In biology, many joints function as hinges like the elbow joint. A lock is a mechanical or electronic fastening device that is released by a physical object such as a key, keycard, fingerprint, RFID card, security token, coin etc., by supplying secret information such as a number or letter permutation or password, or by a combination thereof or only being able to be opened from one side such as a door chain. A lock may also be a clamp or a stop designed to prevent the flow of a liquid or the motion of a caster or wheel Metal fabrication weldment is the creation of metal structures by cutting, bending and assembling processes. It is a valueadded process involving the creation of machines, parts, and structures from various raw materials. Features. Top Hinge Lock Weldment. Made with high quality materialSpecifications. Length 2.85. Width 8.5. Height 1.2