304 Stainless Steel & Carbon Steel Hollow Wall Toggle Anchor - Heavy Duty Expansion Bolts from China Suppliers & Factory
Manufacturing Process
- Multi Station Cold Heading Technology
- Intelligent Heat Treatment System
- Micron-Level Thread Rolling Process
- Fully Automatic Optical Sorting
- Environmentally Friendly Surface Treatment Line
- Metallographic And Mechanical Joint Laboratory
Quality Control System
- Raw Material Source Locking
- Furnace Number Batch Full Traceability
- Third Party Material Certification
- Process Parameters Open And Transparent
- Salt Spray Test Real Time Monitoring
- International Standard Compliance Declaration
Flexible Customization Capability
- Customizable head/slot Shapes
- Extreme Application Of Special Materials
- Breakthroughs In Extra Large/Long Specifications
- Integrated Assembly Of Components
- Customizable Surface Treatment Colors
- Personalized Packaging And Labeling
Technical Service
- On-Site Failure Analysis
- Selection Calculation And BOM Optimization
- Installation Tool Selection Guidance
- Inventory Management (VMI) Trusteeship
- Free Sample Making And Testing
- International Standard Translation And Interpretation
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. Used in drywall ceilings, automotive interiors, or lightweight partitions, it requires minimal replacements and offers easy maintenance.
Factory Environment
High-Quality Stainless Steel Self-Tapping Screw Display
Frequently Asked Questions
The patented petal wings expand into an umbrella structure behind hollow bases (drywall, hollow bricks, metal studs), distributing the load over a broad bearing area. Together with a thickened flange nut washer, this design avoids localized collapse and guarantees secure anchoring.
Yes. The hollow built-in internal thread separates the screw from the anchor. When disassembling, only the screw is extracted while the anchor stays securely anchored, allowing reinstallation simply by inserting a matching screw.
We offer carbon steel fasteners with blue-white or yellow zinc plating, and stainless steel fasteners with natural passivation. All coatings undergo real-time salt spray test monitoring to ensure durability against moisture and mild corrosive environments.
Quality control covers full furnace batch traceability, locked raw material sourcing, automated optical sorting, micron-level thread rolling checks, and comprehensive metallographic and mechanical joint laboratory testing.
Yes. Our flexible customization capability supports custom head and slot configurations, extra-large or extra-long dimensions, special material applications, custom surface colors, and personalized packaging or labeling.
We provide complete engineering assistance, including on-site failure analysis, fastener selection calculation, BOM optimization, installation tooling guidance, free sample prototyping, and Vendor-Managed Inventory (VMI) services.