Fastening system for building component, has carrier ring with central member extending through central bore and fastening part with external ring

摘要

The fastening system (1) material accommodate a building component. It incorporates an aluminum carrier ring (2). A central member (4) has a foot (10) with a sealing ring (11). Pins (27) with sharp tips (28) may dig into the aluminum ring. The central part of the member extends through a central bore (8) and has a screw thread (14). There is a fastening part (3) with an external ring (7) which may hold a toothed projection (17) on an inner ring (5), engaging the thread.