Welded screw for use in assembly, has screw pile shaft surrounded by welding ring that has triangular cross section based on screw pile head and is limited by ring groove, and screw pile head with recess on front side facing shaft

摘要

The screw has a screw pile head (2), and a screw pile shaft (4) that runs out of the screw pile head and has a thread. The screw pile shaft is surrounded by a welding ring (8) that has a triangular cross section based on the screw pile head. The welded ring is limited by a ring groove (18), and the screw pile head has a recess on a front side facing the shaft. The welded ring has a flat portion at a cone point of the triangular cross section.