Our self‑drilling metal butterfly hollow wall anchor is made of high‑strength carbon steel (Grade 4.8/8.8). The self‑drilling serrated sharp point drills directly into drywall/plasterboard – no pre‑drilling required, one‑step installation. The self‑tightening folding metal expansion arms automatically unfold like a butterfly behind the wall, distributing the load over a large area. The countersunk cross (or flange) head sits flush or provides increased bearing surface. Sizes M4‑M6, suitable for 6‑13mm drywall thickness. Ideal for heavy loads on drywall, bathroom hardware, partitions, and light electrical panels. Installation: align the anchor, drive it in with an electric drill – arms deploy automatically – tighten to secure.
Golden Zinc Plated Self-Drilling Hollow Wall Anchor Butterfly Expansion Bolts for Drywall Plasterboard Fixing
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
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Self-Drilling Sharp Tip – No Pre-Drilling, Save Time & Effort
Built-in sharp self-drilling serrated tip penetrates drywall/plasterboard directly – no pre-drilling or hammering needed, completing drilling and installation in one step with an electric driver. Ideal for large-area or overhead work, reducing tool changes and steps. Countersunk cross (or flange) design ensures flush surface or larger load distribution, neat and surface-friendly – one person can finish batch fixing quickly.
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Foldable Metal Expansion Wings – Large Bearing Area in Hollow Walls
Self-tightening foldable metal wings automatically expand into a butterfly shape after passing through the wall, closely hugging the back surface with a large bearing area that evenly distributes loads across drywall or partitions – effectively preventing local crushing or tearing. Made of high-strength spring steel with excellent elasticity, the wings self-lock after expansion – even long-term mounting of bathroom hardware, cabinets, or light electrical panels stays secure without loosening or pullout.
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Bright Yellow Zinc Coating – Rust-Proof, Wear-Resistant & Long-Lasting
Carbon steel substrate with high-gloss yellow zinc plating – dense and uniform coating effectively resists moisture, dust, and mild corrosion, suitable for kitchens, bathrooms, and interior partitions. Wing and thread surfaces resist wear and abrasion, maintaining elastic deployment and thread locking even after repeated use. Fatigue-tested, this anchor withstands static loads and light vibration without failure – extremely low replacement frequency, offering excellent cost-performance.
Factory Environment
Industrial Capabilities
• Factory Area: 8,000 square meters
• Certifications: ISO, IATF, CE, RoHS, JIS, ASTM
• Manufacturing : 70+ internationally advanced production lines
• Testing: 30+ sets of precision quality testing equipment
• Annual Output: Up to 50,000,000 tons
From Raw Materials to Finished Products
Closed-loop manufacturing from raw material to final product is made possible by our factory's fully automated production lines for cold heading, precision thread rolling, controlled-atmosphere heat treatment, and eco-friendly surface finishing. Every fastener satisfies strict requirements for strength, precision, and surface quality thanks to inline optical sorting and a digital MES. You guarantee top-notch fasteners that are trustworthy, efficient, and ecologically conscious.
Innovation Lab:
Expertise and collaboration drive us forward, constantly pursuing innovative solutions. Have a project? Let's get started.
The Complete Joint R&D Process: "Pain Point Diagnosis" to "Customized Implementation"
We offer more than just common parts. Our multicultural engineering staff actively participates in your project from the start. In order to ensure that creative concepts are swiftly converted into workable solutions that lower overall lifetime costs, we thoroughly examine the application context and tailor solutions in the lab, seamlessly integrating technology and application.
Integrated Verification System: Guaranteeing Innovation with "Test Data"
The drawing board is only the beginning of the creative process. We offer one-stop verification for everything from corrosion testing to prototype development through our in-house technical center. We employ empirical data to verify the performance stability of customized solutions through comprehensive simulated working condition tests. In addition to achieving genuinely dependable cost reduction and efficiency improvement, this greatly lowers project risks.
