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Heavy Duty Expansion Hook Anchor Bolt - Stainless Steel Concrete Sleeve from China Suppliers & Factory, M6-M16

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Name: Multifunctional Expansion Hook Anchor Bolt
Material: High Strength Carbon Steel / 201 Stainless Steel / 304 Stainless Steel
Standards: ETAG 001, GB/T 22795
Grade: Carbon Steel: 4.8 / 8.8, Stainless Steel: A1-50 (20/ A2-70 (304)
Specifications: M6, M8, M10, M12, M14, M16 (Length typically ranges from 60mm to 200mm, customizable options available)
Surface Treatment: Carbon Steel: Environmentally friendly color zinc / blue-white zinc / hot-dip galvanized, Stainless Steel: Electrolytic polished / natural color (Natural)
Design Features: Innovative top hook designs, robust expansion mechanism, large-surface flange nuts, exceptional corrosion resistance from multi-material options, and a comprehensive range of stepped specifications.
Applications: Ideal for home appliance suspension, both indoor and outdoor hoisting systems, industrial and warehousing facilities, 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
OEM Services: Available
Supplier Type: Trusted China Suppliers and Factory for premium hardware solutions.

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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

    Core Product Features

    Corrosion Protection

    Multi-Material Corrosion Protection

    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 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 – they won't deform or break under load, meeting diverse needs from appliance hoisting to 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 far exceeds similar products, ensuring absolute safety for overhead suspended items.

    Factory Environment

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    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    Q1: What materials are available for your expansion anchors?

    We provide options in carbon steel (with yellow, white zinc, or hot-dip galvanized finishes) and high-grade 304 or 201 stainless steel to suit various environmental conditions.

    Q2: Can I request customized head shapes or specifications?

    Yes, we offer flexible customization capabilities, including special head/slot shapes, extra-large or long specifications, and personalized surface treatment colors.

    Q3: How do you ensure the quality and safety of your fasteners?

    Our quality control system includes raw material source locking, full batch traceability, real-time salt spray monitoring, and rigorous testing in our metallographic and mechanical laboratory.

    Q4: What technical support do you provide for large projects?

    We offer on-site failure analysis, selection calculations, BOM optimization, installation guidance, and free sample making to ensure the most efficient solution for your needs.

    Q5: Are these anchors suitable for outdoor or coastal applications?

    Absolutely. Our 304 stainless steel anchors are specifically designed for damp environments and coastal areas, offering superior salt-spray and corrosion resistance.

    Q6: What is the load-bearing strength of your expansion anchors?

    Our anchors achieve Grade 8.8 performance (≥800MPa), providing exceptional tensile and shear strength for heavy-duty overhead and static/dynamic load applications.