ESSVE lightweight concrete screws are used for fastening in porous materials such as lightweight concrete and lightweight clinker (also called Leca, Ytong, Siporex, blue concrete, etc.). Lightweight concrete screws can be used for assembling wooden and steel frames, as well as saddle wood, attaching interior items, installing insulation, etc. ESSVE thermal insulation dowel plate Ø 90 mm, article no. 36122.Screws have corrosion resistance class C4: ideal for both indoor and outdoor use.The screw has a conical head and cutting grooves to reduce the risk of tightening too tightly, as well as to facilitate immersion in wood.