Fulfilling the demanding requirements of wood-to-concrete fastening applications. Reliable anchorages that are also easy to install are crucial for carpenters and wood construction specialists looking to fasten wood components to concrete. As well as providing the structural strength necessary to transfer loads, well-designed connectors can also mitigate adverse effects of moisture ingress as well as minimising the potential for excessive tension perpendicular to grain stresses. Fischer’s UltraCut FBS II concrete screws fulfil these high requirements, covering multiple applications in roof and timber construction, complete with a European Technical Assessment (ETA) for added safety. The company offers 29 versions of the screw in zinc-plated carbon steel as well as stainless steel with long usable lengths and ETAs for applications like beam anchorages, timber facades and other wood structures. ADJUSTING WASHERS Carpenters can adjust beams and joists more easily with Fischer’s new FSW adjusting washer combined with it’s the company’s 10mm zinc-plated Ultracut FBS II hexagon head US – a clever solution for evenly aligning purlins spirit levels on uneven surfaces while erecting roof trusses and prefabricated houses. The adjusting washer can be fastened to concrete together with the Ultracut FBS II, before a second FSW with a downward-facing notch is placed over the head of the FBS II and fastened to the wood beam with two Power-Fast FPPF-PT 5.0x40 ZPF screws to enable precise adjustment. INNOVATIVE THREAD GEOMETRY The concrete screw’s patented thread geometry and large core diameter support high shear and tensile loads in concrete, which allows numerous applications to be carried out with fewer fastening points. The FBS II’s flanks cut deep into the concrete as it is inserted to provide an optimum fit that ensures reliable force transfer, anchorages free of expansion, and low edge and axial spacing for simple and safe installation. Ribs under the screw’s head prevent it from unintentionally loosening. The FBS II can be unscrewed, lined and readjusted up to two times without being damaged, and can be reused to temporarily anchor inclined formwork supports in fresh concrete that hasn’t fully set. The concrete screw’s ETA for concrete applications covers fire resistance class R 120 and, in most cases, seismic applications in performance categories C1 and C2.