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Galvanized Butterfly Hollow Wall Anchors - China Suppliers & Factory for Gypsum Board & Brick Fasteners

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Name: Galvanized Metal Assorted Head Hollow Wall Anchor
Material: Premium-grade carbon steel
Standards: ETAG 001 / GB/T 22795
Grades: 4.8 / 8.8
Sizes Available: M4, M5, M6, M8, M10 (lengths typically range from 60mm to 150mm)
Surface Treatment: Bright Galvanized/Blue-white Zinc
Design Features: Innovative flange anti-rotation spike design, extended expansion tube, long slotted strip for versatility, multi-head/hook compatibility, built-in pull-out locking mechanism, and high-gloss anti-corrosion electroplating
Applications: Ideal for heavy-duty drywall and plasterboard hanging, reinforcement of hollow brick/perforated brick wall bases, indoor ceiling installations, pipe supports, and panel mounting
Delivery Time: 15-30 days after advance payment
Origin: China
Brand: JGD
Minimum Order Quantity: 10,000 pieces (negotiable)
Samples: Available upon request
Packaging Options: Boxed/Bulk/Pallet or customized packaging solutions
OEM Services: Available
Suppliers and Factory Direct: With our base in China, we are proud to offer high-quality products directly from our factory to meet your construction needs.

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    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 Capability
    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
    Flange Anti-Slip Spikes

    Flange Anti-Slip Spikes – No Spinning During Installation

    The flange bottom features dense anti-slip spikes that bite into drywall or surface layers during tightening, effectively preventing the anchor from spinning freely with the screw. Even under resistance or vibration, the spikes firmly grip the substrate, ensuring all torque converts into locking force rather than wasted on slipping – significantly improving installation success rates and efficiency, ideal for solo overhead work.
    Extended Expansion Sleeve

    Extended Expansion Sleeve + Long Slots – Stronger Grip in Hollow Substrates

    The extended expansion sleeve with long slots expands fully in hollow bricks, drywall, or aerated blocks, offering far greater contact area than ordinary short anchors – significantly increased holding power. Long slots ensure uniform expansion, avoiding localized stress concentration that could crack the substrate. The built-in pull-and-lock mechanism automatically triggers expansion during tightening – no extra steps, reliable anchoring that stays secure even under heavy loads or long-term vibration.
    Assorted Heads/Hooks

    Assorted Heads/Hooks – One Anchor, Multiple Uses

    One anchor compatible with multiple head types – Phillips, external hex, internal hex, and hook styles – matching different tools and installation preferences. No need to stock multiple models for various scenarios – simpler inventory management. Hook styles are perfect for hanging pictures, lamps, and tool racks without extra accessories. Whether for wall fixing or hanging, just one anchor handles all – greatly reducing part costs and selection time.

    Factory Environment

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    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    How do the flange anti-slip spikes improve installation?
    The dense spikes bite into the substrate, preventing the anchor from spinning during screw tightening, which ensures efficient torque conversion and a more secure lock.
    Are these anchors suitable for hollow wall materials?
    Yes, the extended expansion sleeve and long slots are specifically designed to provide a large contact area and uniform grip in hollow bricks, drywall, and aerated blocks.
    What customization options are available for these screws?
    We offer customization for head/slot shapes, special materials, extra-long specifications, surface treatment colors, and personalized packaging.
    How is the quality of the manufacturing process controlled?
    Our system includes raw material source locking, full batch traceability, micron-level thread rolling, and fully automatic optical sorting to ensure international standard compliance.
    What technical support do you provide for bulk orders?
    We provide on-site failure analysis, selection calculations, BOM optimization, installation guidance, and Inventory Management (VMI) trusteeship.
    Can I use different head types with the same anchor?
    Yes, our anchors are designed to be compatible with multiple head types including Phillips, external hex, internal hex, and hook styles for various applications.