EXPANDING PLUG

摘要

The proposal is for an expanding plug (1) with an internal bore (2) passing completely through the plug body for the insertion of a nail or screw-like expanding pin (4, 14), in which the internal bore (2) has a helical form around the central axis and has a diameter over at least part of its length which is the same as or slightly smaller than the outside diameter of the expanding pin (4, 14).