The Upat impact anchor USA A4 is a time-saving solution in the field of fastening with screws featuring metric threads and threaded rods. This internal-thread anchor made of stainless steel is particularly suitable for outdoor fastening in concrete and natural stone with a dense structure. It is inserted into the cleaned drill hole and then anchored flush with the surface using the setting tool USA-SWZ through hammer blows, which is particularly gentle on the muscles and quick. During this process, the expansion cone pushes into the anchor sleeve and expands it against the wall of the drill hole. Unlike many other bolt anchors, no torque needs to be applied to the threaded rod or screw for proper expansion. The impact anchor USA A4 is especially commonly used for overhead installations and in cases of low concrete thickness for the approved fastening of non-load-bearing systems, such as pipe routes and ventilation ducts.