Ejot Gmbh and Co. Kg

Ejot Verbindungstechnik Gmbh & Co Kg

Ejot Verbindungstechnik Gmbh & Co.

Ejot Se & Co. Kg

Stephan Weitzel

Gottfried Konig

Ralf Birkelbach

Ralph J Hellmig

Ilir Selimi

Frank Dratschmidt

Michael Achenbach

Jan Hackler

Volker Dieckmann

Juergen Behle

Rene Gerber

René Gerber

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.

Screw for screwing into plastic

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

Self-tapping screw

The invention relates to a plastic nut having a receiving bore into which a self-tapping screw can be screwed, it being the case that the receiving bore forms a through-passage region and has an adjoining, narrower region which has a diameter which allows the self-tapping screw to be screwed in, the receiving bore forming one or more steps at its transition to its narrower region via thread-like slope.

Plastic nut for connecting panel-like parts

Growing community of inventors

Bad Laasphe, Germany

Stephan Weitzel