Self-drilling and thread-forming connecting element

Details Self-drilling and thread-forming connecting element Self-drilling and thread-forming connecting element

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 25/10 (2006.01) F16B 35/04 (2006.01)

Patent

CA 2286740

The present invention relates to a self-drilling and thread-forming connecting element, in particular a screw (1), having a threaded shank (2) and a drilling point (4) at the end for the chip-forming drilling of a core hole for the threaded shank (2). The drilling point (4) is designed as a step drill having at least two drilling steps (6, 8) with different diameters (D1, D2).

La présente invention porte sur un élément de fixation autoperforant et taraudeur, en particulier une vis (1) dotée d'une tige filetée (3) et d'une extrêmité en forme de pointe perforeuse (4) pour percer un avant-trou par enlèvement de matière, destiné à la tige filetée (2). La pointe perforeuse (4) est conçu comme un foret étagé comprenant au moins deux étages (6, 8) de diamètres différents (D1, D2).

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