Mounting screw for polystyrene SM-140 (4)

Screw-in screws type SM-140 are used in fixing various types of light elements with a suitable screw on insulated facades of residential buildings, e.g. information boards, signs, lighting lamps, cameras. Suitability for fixing and evaluation of fixing heavier elements belongs to the fitter, because the tearing force is influenced by three basic elements: the density of polystyrene, wind (for elements protruding from the ground and having a large surface) and the weight of the fixed object itself.