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304 Stainless Steel Petal Toggle Anchor Bolt - Heavy Duty Expansion Fixing Screw from China Suppliers & Factory

High-Quality Hollow Wall Toggle Anchor | Petal Expansion Fastener from China Suppliers

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Name: Hollow Wall Toggle Anchor / Petal Expansion Fastener

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Material: High Strength Carbon Steel / 304 Stainless Steel

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Standards: DIN 965, GB/T 819

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Grade: Grade 4.8 / Grade 8.8, Stainless Steel: A2-70 (304)

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Specifications: Available in M4-M10 sizes with lengths of 30mm, 40mm, 50mm, 60mm, 80mm; Customization options are available upon request.

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Surface Treatment: Environmentally Friendly Blue-White Zinc, Yellow Zinc, Natural Stainless Steel (Natural Finish)

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Design Features: Our innovative petal-shaped winglets, hollow internal threaded structure, and thickened flange nut washers provide an anti-slip and anti-rotation design. Made from superior materials, our toggle anchors offer excellent corrosion resistance.

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Applications: Ideal for fixing plasterboard, lightweight partitions (drywall), hollow bricks, foamed concrete blocks, hollow sheet metal, metal profiles, and automotive interior modifications.

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Delivery Time: 15-30 days after receiving advance payment

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Origin: China

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Brand: JGD

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Minimum Order Quantity: 10,000 pieces, negotiable

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Samples: Available upon request

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Packaging: Offered in boxed, bulk, pallet options, or customized packaging to suit your needs

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OEM: Available

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As a leading factory in China, we are dedicated to providing top-notch hollow wall toggle anchors and expansion fasteners to our valued customers. Contact us today to learn more about our competitive offerings and reliable supply!

    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws01
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    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws01

    Key Features

    Our self-tapping screws are crafted from food-grade 304 stainless steel and treated to achieve metric Grade 12.9 ultra-high strength, overcoming the traditional hardness limitations of standard stainless steel. Featuring a countersunk Phillips head design, these screws can be installed flush with the workpiece surface for a zero-profile finish, making them ideal for precision electronics and architectural decoration. We have optimized the thread geometry for different substrates (metal, wood) to ensure low-torque driving with high-torque clamping, effectively preventing stripping. As a superior alternative to standard Tek screws, these fasteners perform exceptionally well in thin sheet metal connections, providing an intelligent fastening solution that balances aesthetics with high load-bearing capacity.
    304 Stainless Steel Cross Recessed Countersunk Head Self-Tapping Screws01
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    Precision Manufacturing Process

    From wire rod to finished product, we strictly adhere to multiple international standards including ISO, DIN, ANSI, and GB. Utilizing multi-station cold forging technology, we ensure shank diameter tolerances are controlled within microns. Threads are formed through a precision thread rolling process to enhance fastening force. For non-standard requirements, we employ optical imaging sorters to reject minute defects like head cracks. In post-treatment, we offer a wide range of surface finishing options: from conventional zinc plating and nickel plating to highly corrosion-resistant Hot-Dip Galvanizing (H.D.G.), as well as decorative polishing and black anodizing. We even provide food-grade passivation treatment, ensuring every screw has a prolonged fatigue life in demanding environments.
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    Transparency & Customization

    As a source factory, we are committed to breaking down the information barriers of traditional trade. From mill certificates for raw materials to hardness grades (covering Grade 4.8 to Grade 12.9, as well as A2-70 and A4-80 marine-grade stainless steel), all test data is traceable. We support full-chain customization: dimensionally, we can adjust thread length and head thickness according to drawings; functionally, we can combine processes like sandblasting, electrophoretic coating (e-coating) , or chrome plating. Whether you need British Standard (BS) fasteners or require a special colored anodized finish, we offer small-batch sampling. This ensures that when you purchase fasteners from us, you not only receive high-quality products but also full transparency and control over the entire process, from material selection to packaging.
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    No Pre-Drilling · Rust Resistant · More Secure

    This stainless steel Phillips countersunk self-tapping screw, with its rust-resistant and corrosion-resistant material, one-step self-tapping design, and aesthetically pleasing countersunk head structure, has become the preferred solution for metal substrate fastening scenarios that is efficient, reliable, and aesthetically pleasing.
    Product Details

    Manufacturing Process

    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

    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

    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

    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

    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

    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

    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

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    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    What materials are available for these self-tapping screws and anchors?
    We provide carbon steel versions with blue-white or yellow zinc plating, and high-quality 304 stainless steel versions with natural passivation to ensure excellent corrosion resistance.
    How do the "Petal Wings" improve anchoring security?
    The patented petal wings expand into an umbrella shape behind hollow walls, creating a large bearing surface that prevents pullout and distributes loads evenly, even on brittle materials like drywall.
    Can the screws be removed after installation?
    Yes. Our hollow built-in thread design allows you to remove the screw while the anchor body remains in place. You can reinstall or replace the screw easily without damaging the wall.
    Do you support custom specifications for special applications?
    Absolutely. We offer flexible customization for head/slot shapes, extra large or long specifications, special materials, and personalized packaging or labeling.
    What kind of quality testing do your products undergo?
    Our products pass through fully automatic optical sorting, salt spray monitoring, and rigorous testing in our metallographic and mechanical joint laboratory to ensure international standard compliance.
    Are samples available for testing before bulk ordering?
    Yes, we provide free sample making and testing as part of our technical service, along with selection calculations and BOM optimization to assist your project.