Expansion plug fastening assembly with position adjustment for hardware elements in particular for runners for drawers

An expansion plug fastening assembly for fastening a hardware element, in particular a runner for drawers, to a hole in a surface, comprising an expansion plug casing which fits into the hole, the casing internally comprising an axial housing rotatably supporting therein the shank of a pin, said pin having a head facing out from the housing for fastening engagement with the hardware element, and means for guiding the head in a direction transverse to the axis of said pin, including at least a first segment of the shank having an axis eccentric with respect to said head to effect adjustment of the position of the hardware element in a plane perpendicular to the axis of the pin upon rotation of the pin;

• and characterized by the fact that the shank comprises a second segment coaxial to the head, the housing comprises a first portion which receives the first segment and a second portion which receives the second segment, the first portion being extended in a first direction radial to the casing of the expansion plug and the second portion being extended in a second direction radial to the casing of the expansion plug and perpendicular to the first direction, whereby upon rotation of the pin each segment moves in the direction of extension of the respective portion of the housing.