20Pcs Expansion Dowels M6x28mm Molly Bolt Hollow Drive Black

Hollow wall expansion dowels include 20 expansion nuts and 20 matching screws, ensuring sufficient quantity for various installation applications and providing a secure and long-lasting fixing effect. The size of the screw is 12 x 6 x 28 mm (Diam. Head x Diam. Base x L), while the nut size is 16 x 5.2 x 18 mm (Diam. Head x Diam. Base x L) and the applicable thickness range is 0-5 mm/0-0.2 inches. Rivet nuts are suitable for most applications, especially for thin or hollow materials where traditional fasteners are difficult to handle, such as aluminum alloy, steel tube, iron sheet and acrylic plate, for hanging curtain rods, hollow doors, metal frames, wall cabinets, wall panels, coat racks, license plates and container labels. Petal nuts are designed for hand and pneumatic tools, and are simple to install. Use two wrenches/clamps, one to fix the rivet nut to prevent it from turning after insertion into the hole; the other to tighten the nut to secure it in place. Screw the screw into the nut and tighten until firmly pressed. Be careful to avoid over-tightening to avoid unscrewing. Hollow wall expansion dowels are made of high-strength carbon steel, anti-rust, corrosion resistant, difficult to deform or break, can be firmly fixed to the plate, suitable for long-term use in various environments. It is recommended to select a suitable tip and avoid the guide for optimal access to the flange. The petal design of the nut allows the screw to better grip the wall when expanding, providing increased clamping effect, reducing slippage and effectively preventing loosening. The petal shape can also evenly distribute the clamping force and protect the fixed parts from damage.