20Pcs M6 M8 Expansion Screw Cross Flat Head Internal Expansion Bolt Kits Stainless Steel Metal Countersunk Built-in Repair Fasteners

Powerful fixing force: The expansion screw with a cross countersunk head adopts the principle of frictional force fixation, which has strong firmness and stability, and is suitable for fixing and connecting various building materials. Wide applicability: It can be used in various scenarios such as indoor decoration, outdoor engineering, circuit installation, and pipeline fixation, with a wide range of applications. Easy installation: The installation method of the expansion screw inside the cross countersunk head is simple, and no special installation equipment or technology is required. You can easily complete the installation. Economical and affordable: Cross countersunk internal expansion screws are a cost-effective fixed connection material. Galvanizing process: The surface is treated with galvanizing process, which enhances the corrosion resistance of the product and is suitable for long-term exposure to air. Product details: Category: Expansion bolt. Material: Carbon Steel/Stainl