Patent ID: 8662805
Filing Date: 2014-03-04
Classification: F16B

Abstract:
1. A torque-limited attachment device having: a first head piece which has at least one shaped element for the purpose of establishing a positive-fit connection to an attachment tool, and a second head piece which has at least one threading, wherein both head pieces are connected to each other, forming a predetermined breaking point which breaks between the two head pieces at a limit torque, such that a first breakaway surface functionally assigned to the first head piece and a second breakaway surface functionally assigned to the second head piece are formed, wherein at least the second head piece has a base material inside which has a corrosion-resistant surface coating, wherein at least the second breakaway surface functionally assigned to the second head piece has a higher resistance to corrosion than an uncoated surface of the base material of the second head piece.