Impact expansion bolt for fastening in thin wall concrete elements

摘要

The bolt has a longitudinally-slotted metal sleeve in a front expanding region with a conically tapering longitudinal hole down to the front which has an inner thread in the non-slotted region. In this is a peg which is hit to spread out the sleeve. On the end of the expanding body (9) that faces away from the expanding region (7) is a safety ring (10) which with at least one detachable catch element (11) engages the internal thread and thus protects the ring from self-induced slipping. The catch element is an elastic flange formed on the safety ring.