The expansion screw includes a hollow element that can be inserted into the orifice of an object. It has an axis, expands in a radiation direction, an insertible expansion element, a washer placed between objects, and an additional element in D. And axle end.

摘要

Mounting bolt Hole comprises a radially Expandable Element insertable within a Hole of an object that has an axis and is Expandable in a radial directionAn Expander insertable element in that Element, a washer positionable between an object and an additional element in one of the axial ends.