China Suppliers Factory Heavy Duty 304 Stainless Steel Carbon Steel Hollow Wall Toggle Anchor Expansion Fixing Screw
Large Bearing Surface with Petal Wings – Pullout Resistant
The patented foldable petal wings automatically expand into an umbrella shape after passing through hollow walls (drywall, hollow bricks, metal studs), closely hugging the back surface with a large bearing area – far superior to ordinary expansion sleeves. Even on thin or brittle wall materials, the load is evenly distributed, preventing local tearing or collapse. Combined with a thickened flange nut washer that prevents front-side sink-in, double protection ensures secure anchoring with zero pullout risk.
Hollow Built-in Thread – Removable & Reusable
The hollow internal threaded design separates the screw from the anchor body. When disassembly is needed, simply remove the screw while the petal wings remain behind the wall – reinstallation only requires driving a new screw into the existing anchor body. Compared to single-use expansion tubes, this drastically reduces consumable costs, especially ideal for frequently serviced equipment brackets and interior modification applications.
Wear & Corrosion Resistant – Long Service Life
Carbon steel versions with blue-white/yellow zinc plating, stainless steel with natural passivation – multi-layer protection resists moisture and mild corrosive environments. The petal wings have no sharp notches during expansion and withstand repeated bending without fatigue fracture. Proven in durability tests, this anchor maintains stable clamping force under vibration or temperature changes.
