Electrically insulated fastening element for fastening object at subsurface, has shaft, at which expansion area is arranged with expansion elements

摘要

The electrically insulated fastening element (1) has a shaft (2), at which an expansion area (5) is arranged with expansion elements (6a,6b,7). The shaft has a hollow cylindrical body (3). Another hollow cylindrical body (4) is arranged at the shaft, where the cylindrical body is made of electrically insulated material. Both hollow cylindrical bodies are movable against each other in a telescopic manner.