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Multifunctional Stainless Steel Expansion Hook Bolt - Heavy Duty Concrete Sleeve Anchor from China Suppliers & Factory

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Product Name: Multifunctional Expansion Hook Anchor Bolt
Material: High Strength Carbon Steel / 201 Stainless Steel / 304 Stainless Steel
Standards: ETAG 001, GB/T 22795
Grades: Carbon Steel: 4.8 / 8.8; Stainless Steel: A1-50 (20/ A2-70 (304)
Specifications: Available in sizes M6, M8, M10, M12, M14, M16 (length typically ranges from 60mm to 200mm, customizable upon request)
Surface Treatment: Carbon Steel options include environmentally friendly color zinc, blue-white zinc, and hot-dip galvanized; Stainless Steel options feature electrolytic polishing and natural finish.
Design Features: Our expansion hook anchor bolts boast diverse top hook designs, a powerful expansion mechanism, large-surface flange nuts, high corrosion resistance due to multi-material construction, and a comprehensive range of stepped specifications.
Applications: Ideal for home appliance suspension, indoor and outdoor hoisting systems, industrial and warehousing applications, billboard and curtain wall construction, as well as plumbing and piping engineering.
Delivery Time: 15-30 days after advance payment confirmation
Origin: China
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable
Samples: Available upon request
Packaging: Offered in boxed, bulk, pallet, or customized packaging options
OEM Services: Available

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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
    Corrosion Protection
    Multi-Material Corrosion Protection for All Environments
    Available in carbon steel (yellow/zinc/hot-dip galvanized), 201 or 304 stainless steel (A1-50/A2-70). Carbon steel with multi-layer zinc plating suits dry indoor and general construction; 304 stainless steel offers excellent salt-spray resistance for coastal outdoor, damp basements, or chemical plants. Choose the right material for any environment – ensuring hooks stay rust-free, won't become brittle, and guarantee safe suspension.
    Diverse Top Hooks
    Diverse Top Hooks – One Anchor for Multiple Needs
    Offered in closed ring, open hook, eye ring, V-hook, and more – one anchor, many uses. Closed rings suit rope hanging, open hooks enable quick attachment/removal, eye rings fit chains or wire ropes, V-hooks are designed for pipes and cables. All hooks are cold-formed with no cracks or internal defects – they won't deform or break under load, meeting diverse needs from appliance hoisting to signboards and pipe fixing.
    Expansion Anchoring
    Powerful Expansion Anchoring – Rock-Solid Load Capacity
    The built-in cone expands the sleeve as the nut is tightened, with expansion wings gripping the concrete hole wall firmly – delivering high tensile & shear strength (Grade 8.8 ≥800MPa). The large flange nut provides anti-loosening and slip resistance against vibration. Proven in destructive tests, the ultimate pullout force in concrete far exceeds similar products. Withstands both static and dynamic loads without shifting or sinking – ensuring absolute safety for overhead suspended items.
    Factory Environment
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    High-Quality Stainless Steel Self-Tapping Screw Display
    Frequently Asked Questions
    What materials are available for the expansion anchors?
    We offer anchors in carbon steel (with yellow, white zinc, or hot-dip galvanized finishes) and high-grade 201 or 304 stainless steel to suit different environmental needs.
    Can I request custom head shapes or slot designs?
    Yes, our flexible customization capability allows for customizable head/slot shapes, special materials, and personalized packaging to meet your specific requirements.
    How do you ensure the quality and traceability of your products?
    We maintain a full traceability system using furnace number batches, raw material source locking, and third-party material certifications to ensure international standard compliance.
    What types of top hooks can be integrated with the anchors?
    Our anchors can be fitted with diverse top hooks including closed rings, open hooks, eye rings, and V-hooks, designed for various applications like rope hanging or pipe fixing.
    Are your products suitable for high-vibration environments?
    Yes, our anchors feature large flange nuts that provide anti-loosening and slip resistance, ensuring stability and safety even under dynamic loads and vibrations.
    Do you provide technical support for product selection?
    We offer comprehensive technical services including selection calculations, BOM optimization, on-site failure analysis, and free sample making for testing.