Hex nut sleeve anchors are a higher strength general purpose anchor. They are unique in the they can be used for both solid or hollow concrete and masonry applications. Some applications are mounting of electrical and mechanical fixtures on walls, mounting signage, and general purpose conscruction. A hold is drilled in the base material an anchor depth deeper than the required embedment, the anchor is driven into place, and the hex nut is tighted which expands the sleeve, anchoring it in place. Made from 304 stainless steel for strength and high resistance to corrosion.