Attachment device

摘要

The device (100) has a shell (120) provided with a load application unit (121) for an object and a counter bearing (140) for an outer surface (111) of another object (110) and a passage (150), where the passage has an insertion portion (151) arranged adjacent to the load application unit and an expanding portion (152). The expanding portion comprises a narrowing unit (160) falling below outside dimensions of a mandrel (130), where the unit is extended up to a location of the passage that is provided adjacent to the bearing. The narrowing unit comprises conical and cylindrical sections. Independent claims are also included for the following: (1) a method for fastening objects (2) a device for generating shock on a fastening element.