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Galvanized Hollow Wall Anchors - Assorted Head Expansion Screws from China Supplier & Factory for Gypsum Board

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Name: Galvanized Metal Assorted Head Hollow Wall Anchor
Material: Premium high-quality carbon steel
Standards: ETAG 001 / GB/T 22795
Grades: 4.8 / 8.8
Sizes: M4, M5, M6, M8, M10 (Lengths ranging typically from 60mm to 150mm)
Surface Treatment: Bright Galvanized/Blue-white Zinc
Design Features: Flange anti-rotation spike design, extended expansion tube, long slotted strip, compatibility with multi-head/hooks, built-in pull-out locking mechanism, and high-gloss anti-corrosion electroplating
Applications: Ideal for heavy-duty hanging of drywall/plasterboard, reinforcement of hollow brick and perforated brick wall bases, indoor ceiling hanging, pipe supports, and panel installations
Delivery Time: 15-30 days upon receipt of advance payment
Origin: China
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable for bulk orders
Samples: Available for testing
Packaging: Options include Boxed, Bulk, Pallet, or custom packaging
OEM Services: Available from our trusted factory
Suppliers: Leading supplier in the industry, offering quality products directly from our factory in China.

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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

    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

    What prevents the anchor from spinning during installation?
    The flange bottom is designed with dense anti-slip spikes that bite into the substrate, ensuring the anchor remains fixed while the screw is tightened.
    Are these anchors suitable for hollow walls or bricks?
    Yes, the extended expansion sleeve and long slots are specifically designed to provide a stronger grip and larger contact area in hollow substrates like drywall and hollow bricks.
    What materials are these self-tapping screws made of?
    Our high-quality self-tapping screws are manufactured using 304 Stainless Steel, providing excellent corrosion resistance and durability.
    Can I request customized head shapes or packaging?
    Absolutely. We offer flexible customization for head/slot shapes, surface treatment colors, and personalized packaging or labeling to meet your specific needs.
    How do you ensure the quality and traceability of the products?
    We use a full traceability system based on furnace numbers, raw material source locking, and third-party certifications to ensure international standard compliance.
    Do you provide technical support for installation?
    Yes, we provide on-site failure analysis, selection calculations, installation tool guidance, and free sample making for testing.