Threaded part (1), designed to be connected to a threaded hole (7) of an implant (6), which comprises a main threaded area (4) ending in a decreasing-width-provided threaded tip (5). The presence of the decreasing-width-provided threaded tip (5) has two beneficial effects: due to its decreasing width, the tip of the threaded part (1) may be inserted more easily in the threaded hole (7), even when the threaded part (1) enters the threaded hole (7) at a very pronounced angle; as it is threaded, the tip of the threaded part (1) can start to be threaded in the threaded hole (7) before the main threaded area (4), as a result of which the threaded part (1) tends to straighten itself as it is screwed in. The inventive threaded part (1) may be a prosthesis screw, a closure screw, an implant-bearing screw, a healing abutment, a transepithelial, etc.