Wall Anchors M4 x 20 mm Carbon Steel Concrete Block

Wall anchors M4x20mm, designed for thin wall and hollow material installations. Wall plugs provide a solution for fixing shelves, fixtures, frames and decorative objects to surfaces such as plasterboard, sheet metal and hollow doors. Made from carbon steel, these metal dowels have a surface treatment that gives them corrosion and rust resistance. This hollow material dowel is designed to withstand heavy loads. The expansion mechanism is the core of this performance: when tightening the screw, the dowel expands to the back of the wall, creating a support surface that distributes the weight. Installing these dowels is a process. You need to drill a hole with the appropriate diameter, insert the dowel suitable for hollow bricks, and then use expansion pliers or riveting tool to pull the screw out. After the nut is expanded into a shape, you can remove the screw, position the object to be fixed, and tighten.