The fischer concrete screw FBS 4 and 5 P is made of galvanized steel with a ball head and TX drive. The FBS 4 and 5 P is perfectly designed for applications such as fastening rail systems, cable trays or electrical installations and installations in general, as well as for DIY applications. When the concrete screw is driven in with an impact screwdriver, the thread cuts deep into the base material, providing high load-bearing capacity. The shallow drilling depth saves time during installation. The recommended loads for concrete and suitability in masonry, such as sand-lime brick, as well as the classification in fire resistance class R120 guarantee safety.