Device for screw assembly of at least one rigid part on a support and opening equipped with such a device

摘要

The device has a self-tapping screw (3) including a pressure surface (6) that contacts a connected part contacting portion (12), where the surface and the portion are provided with combined fitting units formed of reliefs i.e. ribs (7) and combined reinforcements i.e. recesses (8). The ribs and recesses permit a non-symmetrical rotation with respect to an axis of a threaded rod and are fixed with respect to one another after screwing the screw, in a support for increasing a torque that is resistant to screwing.