Fastening part e.g. weld stud, for arch welding on e.g. thin metal sheet, has flange section with projection, which extends out within ring flange in joining direction from base section

摘要

The fastening part has a flange section (14) to be joined on a work piece (26), and an attachment section, which is connected with the flange section. The flange section includes a base section (12) and a ring flange (22) having a ring shaped front surface (30). The flange section includes a projection, which extends out within the ring flange in a joining direction from the base section, where the projection is arranged centrally within the ring flange.