Petal Expansion Lock Nuts Metal Skin Rivet Nut Hardware Fastening Kit Expansion Screw 10Pcs/bag

✨ Product Highlights✅ Made of high-quality carbon steel with a thickened galvanized finish for rust and corrosion resistance – suitable for outdoor humid and rainy environments.✅ 4‑petal expansion design – automatically expands when the screw is tightened, securely locking into hollow materials to prevent loosening or slipping.✅ Full range of sizes: M4 / M5 / M6 / M8 – suitable for home installation and large construction projects.✅ Compatible with various hollow materials: thin steel plates, aluminum sheets, gypsum boards, plastic panels, and more.✅ Simple installation: just drill a hole, insert the screw, and tighten – no pre‑inserted plugs required.✅ Excellent load‑bearing capacity – ideal for fixing signboards, shelves, ceiling lights, wall‑mounted furniture, and more. 📌 Product Specifications- Material: Carbon steel with galvanized anti‑rust treatment- Sizes available: M4, M5, M6, M8- Package: 10pcs/bag 💡 Installation Instructions1. Drill a hole in the metal/gypsum board matching the screw diameter.2. Insert the 8‑claw expansion end of the screw into the hole.3. Tighten the screw head with a screwdriver until the 8 claws are fully expanded and securely locked into the panel.4. Mount the item you want to fix onto the screw. ⚠️ Precautions- Suitable for hollow panels with a thickness of 0.5–5mm. Not suitable for solid steel plates or solid concrete walls.- Contains small metal parts – keep out of reach of young children to prevent accidental swallowing. #Bolt#ExpansionBolt#Nut#HardwareAccessories