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304 Stainless Steel Expansion Eye Bolt Heavy Duty Lifting Expansion Anchor Bol10.jpg
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304 Stainless Steel Expansion Eye Bolt - Heavy Duty Lifting Anchor from China Suppliers & Factory for Concrete and Marine Use

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Name: Expansion Bolt with Ring (Expansion Eye Bolt / Lifting Expansion Anchor with Ring)
Material: Made from high-quality AISI 304 Stainless Steel, known for its corrosion resistance and rust-proof properties, along with durable Q235 Carbon Steel
Standards: Conforms to GB/T 22795 and ETAG 001
Grade: Available in A2-70 (304 Stainless Steel) and Grade 4.8 / Grade 8.8 (optional Carbon Steel, aluminum)
Specifications: Ranges from M6 to M20, with customization options available
Surface Treatment: Features natural polishing and passivation for corrosion resistance; optional electro-galvanizing or hot-dip galvanizing for enhanced rust resistance in Carbon Steel
Design Features: Integrates an eye structure with an expansion fixing principle, ensuring easy installation and strong performance. Multiple specifications are available for various applications
Applications: Ideal for outdoor leisure activities, lifting and hoisting, construction engineering, shipbuilding and marine projects, as well as general assembly tasks
Delivery Time: Typically 15-30 days upon receipt of advance payment
Origin: Manufactured in China, ensuring quality from certified suppliers
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable based on requirements
Samples: Available upon request
Packaging: Offered in boxed, bulk, pallet, or customized packaging solutions
OEM: Customization options available to meet your branding needs

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

    • ✓ 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
    Dual Material Options

    Dual Material Options, Corrosion Resistant & Durable

    Our expansion eye bolts are available in AISI 304 stainless steel A2-70 grade and Q235 carbon steel 4.8/8.8 grade. The stainless steel version is polished and passivated with natural rust-proof performance, perfectly suitable for humid outdoor and marine salt spray environments. Carbon steel can be electro-galvanized or hot-dip galvanized for stronger anti-rust protection. Sizes range from M6 to M20 with customizable inner ring diameter.

    Integrated Eye Ring

    Integrated Eye Ring & Expansion Anchor Design

    Adopting one-piece eye ring structure without welding breakpoints for superior tensile strength. Based on expansion anchoring principle, the sleeve expands tightly against concrete wall when tightening the nut to prevent slipping. Compliant with GB/T 22795 and ETAG 001 standards, it is ideal for concrete lifting points, hammock anchors, construction hoisting and marine mooring.

    Easy Installation

    Easy Installation Without Embedding

    Simple installation requires only drilling, hole cleaning, inserting the anchor and tightening the nut, with no pre-embedding needed to save construction time and labor costs. Widely applicable to construction anchoring, heavy lifting points, outdoor leisure, marine equipment and general mechanical assembly. Complete specifications and tool-free mounting support fast on-site installation.

    Application Scenarios

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    High-Quality Expansion Eye Bolt Display

    Frequently Asked Questions

    Q1: What materials are available for the expansion eye bolts?
    We offer AISI 304 stainless steel (A2-70 grade) for high corrosion resistance and Q235 carbon steel (4.8/8.8 grade) with galvanized finishes for heavy-duty applications.
    Q2: What is the size range for these anchor bolts?
    Standard sizes range from M6 to M20. We also provide flexible customization for inner ring diameters and special lengths to meet specific project needs.
    Q3: Are these eye bolts suitable for marine or outdoor use?
    Yes, our 304 stainless steel version is polished and passivated, making it ideal for humid outdoor environments and marine salt spray conditions without rusting.
    Q4: What standards do your expansion eye bolts comply with?
    Our products are manufactured in compliance with international standards including GB/T 22795 and ETAG 001, ensuring reliable load-bearing and safety.
    Q5: Is the eye ring welded to the bolt?
    No, we use an integrated one-piece eye ring structure without welding breakpoints. This design significantly increases tensile strength and overall safety.
    Q6: How do I install the expansion eye bolt?
    Installation is simple: drill a hole in the concrete, clean the dust, insert the expansion anchor, and tighten the nut. The sleeve will expand against the wall for a secure fit.