Patent ID: 7214019
Filing Date: 2007-05-08
Classification: F16B

Abstract:
1. Self-tapping screw comprising a head, a boring part and a threaded shaft for attaching a panel to a substructure, wherein the screw is configured such that it produces a through hole in the panel, which accommodates the threaded shaft with a degree of play, and produces in the substructure a bore hole, in which the thread of the shaft cuts a counter-thread, wherein the boring part ( 30 , 30 ′, 30 ″) has a boring tip ( 50 , 50 ′, 50 ″) arranged at an outer edge at one radial side of the shaft so that it is eccentric relative to a longitudinal axis ( 38 ) of the screw ( 20 , 20 ′, 20 ″) to define an initial drive axis offset by an angle α to the longitudinal axis, and a cutting edge lying in a longitudinal plane extending from the boring tip and inclined across the screw to an opposite radial side of the shaft from the boring tip so that the boring part is adapted to cut the through hole up to twice the diameter of the boring part.