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High-Quality Hammer-in Split Expansion Anchors from China Suppliers & Factory – Quick Drive-in Concrete Anchors

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Name: Hammer-in Split Expansion Anchor / Drive Anchor
Material: Premium carbon steel or optional 304 stainless steel
Standards: Compliant with GB, DIN, and ANSI
Grade: Available in high-strength grades of 4.8 and 8.8
Sizes: Offered in M6, M8, M10, M12, M14, and M16 (lengths from 30mm to 120mm)
Surface Treatment: Environmentally friendly yellow zinc or blue-white zinc plating
Design Features: Innovative hammer-in quick-installation design, pre-cut bifurcated expansion grooves, anti-slip concentric circle texture flange, one-piece molded tapered tip, and high-quality color zinc anti-rust coating
Applications: Ideal for load-bearing wall and ceiling fixing, precise pipe and bracket positioning, building and decoration framing, as well as railings and safety protection installations
Delivery Time: Typically 15-30 days after advance payment is received
Origin: Manufactured in China
Brand: JGD
Minimum Order Quantity: 10,000 pieces with negotiation options
Samples: Available upon request
Packaging: Multiple options including boxed, bulk, pallet, or customized packaging
OEM Services: Offered to meet client-specific requirements
China Suppliers and Factory specializing in high-quality fasteners.

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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

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    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
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    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
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    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
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    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
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    Key Feature 01

    Hammer-in Quick Installation – One Step, No Nut Tightening

    Hammer-in design – after inserting into the pre-drilled hole, simply strike the head with a hammer. The integrally formed tapered tip drives the split expansion slots outward, anchoring tightly against the hole wall. No wrench or special tools needed – one person, one hand. Ideal for overhead work, tight spaces, or bulk installations, offering several times faster installation than traditional expansion bolts, significantly reducing labor costs.

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    Key Feature 02

    Flange + Concentric Anti-Slip Rings – Load Distribution & Rotation Prevention

    The larger flange head provides greater bearing area, effectively dispersing loads and preventing hole-edge crushing or cracking. The bottom face features anti-slip concentric rings that bite into the substrate surface after driving, preventing rotation under vibration or lateral forces – ensuring stable anchoring orientation. Perfect for suspension brackets, pipe positioning, and railing installations – long-term reliability without loosening.

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    Key Feature 03

    Quality Zinc Plating – Corrosion-Resistant, Wear-Resistant & Long-Lasting

    Carbon steel substrate with eco-friendly yellow or blue-white zinc plating – dense and uniform coating resists moisture, dust, and mild corrosion, suitable for both indoor and outdoor use. The integrally formed tapered tip has no weld seams – won't crack under impact; the split expansion slots are hardened for repeated hammering without deformation. Fatigue-tested, this anchor withstands long-term static and dynamic loads without failure – extremely low replacement frequency, offering excellent value.

    Factory Environment

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    High-Quality Stainless Steel Self-Tapping Screw Display

    Frequently Asked Questions

    What advanced technologies are used in the manufacturing process?
    Our manufacturing process utilizes Multi-Station Cold Heading Technology, Intelligent Heat Treatment Systems, Micron-Level Thread Rolling, Fully Automatic Optical Sorting, and Environmentally Friendly Surface Treatment Lines, all backed by a Metallographic and Mechanical Joint Laboratory.
    How do you guarantee the quality of your fasteners?
    Quality control is maintained through raw material source locking, furnace number batch full traceability, third-party material certifications, transparent process parameters, real-time salt spray test monitoring, and international standard compliance declarations.
    What custom services do you offer?
    We offer flexible customization capabilities including customizable head/slot shapes, extreme application of special materials, extra large/long specifications, integrated assembly of components, custom surface treatment colors, and personalized packaging and labeling.
    How does the hammer-in quick installation anchor work?
    The hammer-in design requires no wrenches or special tools. Simply insert it into the pre-drilled hole and strike the head with a hammer. The integrally formed tapered tip drives the split expansion slots outward to anchor tightly against the hole wall, allowing for fast, one-handed installation.
    What is the advantage of the flange head and anti-slip rings?
    The larger flange head provides a greater bearing area to distribute loads and prevent hole-edge crushing. The concentric anti-slip rings on the bottom face bite into the substrate surface to prevent rotation under vibration or lateral forces, ensuring long-term reliability.
    Are these anchors suitable for corrosion-prone environments?
    Yes, they feature a carbon steel substrate with eco-friendly yellow or blue-white zinc plating that resists moisture, dust, and mild corrosion. The hardened, split expansion slots and seamless tapered tip ensure durability under repeated impact and dynamic loads.