A through-bolt expansion anchor made of galvanized carbon steel with an M8 thread and a total length of 130 mm, designed for mechanical fastening into concrete without cracks. It allows installation through the fastened component as well as stand-off installation. During design and installation, it is necessary to follow the installation procedure for the given anchor size and observe the prescribed embedment depth, the tightening torque, and the distances from edges and between anchors.