The insulation screw plug IPSD-H is perfectly suitable for direct fastening into wood fibre insulation boards and perimeter insulation panels without thermal bridges of wall connection profiles, metal sheets, base protection profiles, cornice covers, motion detectors, lamps, signs, etc. when used in combination with a 4.5 mm Ø plumber screw. The perfectly matched internal geometry allows easy screwing in of the plumber screw. The special plug can be mounted directly into the insulation material with a TX drive (TX25) or removed. Another advantage is that only a small hole remains in the insulation material after disassembly. The special plug IPSD-H is made out of glass-fibre reinforced, weather and aging resistant nylon. The innovative insulation plug screw IPSD-H can usually be installed in ETICS without pre-drilling.