Abstract: A self-tapping screw (10, 30) comprising a drive (12) and a shank (14) bearing a thread comprising a main thread (16, 32), wherein the main thread (16, 32) has a maximum main thread external diameter (DAF) and a cutting area (F) and a supporting area (T) following in the direction of the drive (12), wherein the shank (14) has a threaded end (18) at an end opposite the drive (12), with the screw end (18) having a diameter (DE) of at least 20% of the maximum main thread external diameter (DAF), The shank further has, in the region of the screw end (18), a tap flute (20), wherein the tap flute (20) comprises at least two tapping thread turns (20a, 20b, 20c) which attain, in their external diameter (DAA), no more than 90% of the maximum main thread external diameter (DAF) and form a tap region in which the tapping thread turns (20a, 20b, 20c) have the same diameter development, and in addition in that the diameter of the main thread (16, 32) in the tap flute region (AB) is less than or equal to the diameter (DAA)

Abstract: The invention relates to a screw (IO) in order to cut a mating thread in a plastic article, comprising a lower threaded part (F) and an upper threaded part (T), the lower threaded part having a larger diameter and its tip covering a larger surface than the upper threaded part.

Abstract: A self-tapping screw (10, 30) comprising a drive (12) and a shank (14) bearing a thread comprising a main thread (16, 32), wherein the main thread (16, 32) has a maximum main thread external diameter (DAF) and a cutting area (F) and a supporting area (T) following in the direction of the drive (12), wherein the shank (14) has a threaded end (18) at an end opposite the drive (12), with the screw end (18) having a diameter (DE) of at least 20% of the maximum main thread external diameter (DAF), The shank further has, in the region of the screw end (18), a tap flute (20), wherein the tap flute (20) comprises at least two tapping thread turns (20a, 20b, 20c) which attain, in their external diameter (DAA), no more than 90% of the maximum main thread external diameter (DAF) and form a tap region in which the tapping thread turns (20a, 20b, 20c) have the same diameter development, and in addition in that the diameter of the main thread (16, 32) in the tap flute region (AB) is less than or equal to the diameter (DAA)

Abstract: The invention relates to a clamping piece of springy sheet metal with two opposing, V-shaped latching recesses and a spring bottom connecting the latching recesses, said spring bottom having in its middle a hole for receiving a screw for securing a component to a panel, wherein, for latching into a penetration in the panel, the latching recesses are of such depth that, with the clamping piece in the latched position, their arms encompass the edges of the penetration on both sides in such a manner that the spring bottom maintains a distance from the panel. Provided between spring bottom and component is a supporting part, wherein, when pressure is exerted on the spring bottom, said supporting part holds the spring bottom at a minimum distance from the component through supporting of the supporting part on the component.