A sleeve anchor is a type of mechanical fastener that is used to attach one object to another. The anchor consists of a threaded metal rod with a flattened end, which is inserted into a pre-drilled hole in the object to be attached. A nut and washer are then placed on the end of the rod, and tightened to secure the anchor in place.Sleeve anchors can be used in a variety of applications, including attaching wall panels and signs to buildings, or mounting railings and handrails to concrete walls or steps. They are also commonly used in construction and masonry applications. Sleeve anchors are available in a variety of sizes and materials, depending on the specific application.