Fastener for use in masonry comprise plug with bore and spreading component at its lower end, bolt passing through plug and washer with teeth which fit into top edge of plug, preventing it from rotating

摘要

The fastener for use in masonry comprise a plug (1) with a central bore and a spreading component (2) at its lower end. A bolt (5) passes through the plug and a washer (4) with teeth which fit into the top edge of the plug prevents it from rotating.