FIELD: construction.
SUBSTANCE: invention relates to modular mounting systems with bearing elements in the form of U-shaped hollow steel profiles used in construction. A method for mounting the system using a U-shaped profile is presented, in which a fast mounting nut is mounted in the groove of the U-shaped profile, a rod element is mounted in the nut and the nut is tightened, whereas the profile is made in such a way that when tightening the nut, the profile walls are deformed at the point of their interaction with the nut, with the formation of a seat in the form of a recess, provided due to the thickness of the profile walls and/or profile material, whereas the thread in the nut and the counter thread of the rod element are made so that when tightened to form deformation in the profile does not deform them.
EFFECT: increased reliability of fastening the system assemblies.
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