The invention relates to a connecting element consisting of a dovvel (3) vvith 5 flexible vvings (3.1) to be inserted to a slot (5.1) on the furniture (5) and least one long edge (4.1) and one short edge (4.2) vvhich ensure that vvhen rotated in the dovvel the flexible vvings (3.1) of the dovvel expand and tightens the dovvel in the slot (5.1) on the furniture (5), a screvvdriver inlet (4.6) for rotating, support surfaces (4.4) facing opposite directions limited vvith reeiproeal mounting 10 surface protrusions (1.3) on the mounting surface (1.1) at the edges of the screvvdriver inlet restricting rotation more than 90° - 95° vvhen rotated, preferably, clockvvise and in the reverse direction and tensioning pin protrusions (4.5) and it is characterized by the fact that the said tensioning pin (4) contains tensioning pin screvv threads (4.3) vvhich partially contact vvith the flexible 15 vvings (3.1) in this position open a groove in the flexible vvings (3.1), moves vertically in the dovvel and ensures that the hinge (1) mounting surfaee (1.1) is pulled and tightened on the furniture (5).
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