The UltraCon SS4 fastening system is a family of screw anchors for light to medium duty applications in concrete, masonry block and brick base materials. The UltraCon SS4 is fast and easy to install and provides a neat, finished appearance. For every project, it is important to consider several things before making a selection: The UltraCon SS4 screw anchor is available in 410 stainless steel.