With its permissible load of up to 2.4 kN, the low anchoring depth (in some cases only 25 mm) and the small bore diameter (6 mm), the FNA II combines safety with ease of installation and is often used in tunnel construction. The expansion clip provides the nail anchor with a firm hold as soon as it is inserted into the drill hole, so that it does not fall out during overhead mounting. The anchor can then be fastened quickly and easily by tapping. The solid shank cross-section ensures high load-bearing capacity. The installed nail anchor expands automatically under load.
Thanks to its high load-bearing capacity in concrete, the FAZ II is also ideal for tunnel construction applications, such as the anchoring of substructures for fire protection panels. According to the new ETA, the tensile and transverse load capacities have increased again (sizes M8 – M12), which enables fewer fastening points and lower costs. Its variable anchoring depths (sizes M8 – M16) can also be adapted to the loads to the millimetre. When the nut is tightened, the conical bolt is pulled into the expansion clip and tensions it firmly against the drill hole wall. At the same time, the loads are introduced into the concrete and the highest load-bearing capacity is achieved. Both the FNA II and FAZ II have the rating (ETA) as well as the fire resistance class R 120. Both steel anchors can be used in the pre- and through-hole installation, which is an advantage when installing anchor groups. Small axis and edge distances further facilitate processing.
