China Stainless Steel Turnbuckle Hook & Eye Type Heavy Duty Wire Rope Tensioner Factory & Suppliers for Marine & Construction

Name: Stainless Steel Turnbuckle (Turnbuckle / Rigging Screw)
Material: Crafted from high-quality AISI 304/316 stainless steel, known for its corrosion and rust resistance, along with Q235 carbon steel for added durability.
Standards: Manufactured in compliance with ISO, GB/T 3818, GB/T 5975, DIN 1480, and US Federal Specification FF-T-791 standards.
Grade: Available in stainless steel grades A2-70 (30and A4-80 (316), as well as carbon steel grades 4.8 and 8.8, ensuring reliability and strength.
Specifications: Ranging from M6 to M24, with customizable options to meet your specific needs.
Surface Treatment: Features natural polishing for corrosion resistance, with optional electro-galvanized or hot-dip galvanizing treatments for enhanced rust protection.
Design Features: Offers a two-way adjustable structure with multiple end types. The open-body design provides high tensile strength while resisting corrosion.
Applications: Perfect for outdoor engineering, marine projects, building curtain walls, lifting and hoisting, and general assembly tasks.
Delivery Time: Products are typically delivered within 15-30 days after receiving advance payment.
Origin: We are a leading factory based in China, known for high-quality manufacturing.
Brand: JGD
Minimum Order Quantity: Minimum order quantity is 10,000 pieces, with negotiable terms available.
Samples: Sample units are available for evaluation.
Packaging: Available in boxed, bulk, or pallet options, with customized packaging solutions.
OEM: Customized OEM services are offered to meet various client requirements.

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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

Our Core Advantages

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

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

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

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

Premium Turnbuckle Features

Multi-Material & Full-Size for Durability

Available in AISI 304/316 stainless steel and carbon steel series. The 316 version resists salt spray corrosion, while carbon steel can be galvanized for enhanced rust protection. Sizes range from M6 to M36 with a breaking load of over 15 tons, suitable for marine, outdoor, and construction applications.

Bidirectional Adjustment Design

The open-body bidirectional design allows synchronous screw expansion/contraction by rotating the central body, enabling precise tension adjustment. Multiple end types (hook-hook, hook-eye, etc.) are available to fit various connections, significantly improving efficiency.

High-Tension Stable Structure

The one-piece open body and high-strength threads ensure stable tensile performance, resisting loosening under long-term dynamic loads. Galvanized carbon steel options offer excellent rust resistance for lifting, curtain wall, and marine applications with sufficient safety redundancy.

Application Scenarios

High-Quality Stainless Steel Turnbuckle Display

Frequently Asked Questions

Q1: What is the difference between 304 and 316 stainless steel turnbuckles?

304 stainless steel offers excellent corrosion resistance for standard outdoor use, while 316 contains molybdenum, making it superior for marine environments or areas with high salt spray and chemical exposure.

Q2: How do I choose the correct turnbuckle size for my project?

Selection depends on the required breaking load and the diameter of the cable or rod being used. We offer sizes from M6 to M36; our technical team can provide selection calculations based on your specific tension requirements.

Q3: Are these turnbuckles suitable for heavy lifting?

Yes, our high-strength carbon steel and stainless steel versions are designed for lifting and tensioning. The carbon steel series can handle breaking loads exceeding 15 tons with appropriate safety factors.

Q4: Can the surface treatment be customized for carbon steel?

Absolutely. We provide environmentally friendly surface treatment lines including hot-dip galvanizing, electro-galvanizing, and customizable colors to meet specific aesthetic or protective needs.

Q5: Do you provide material traceability and certification?

Yes, we maintain full traceability via furnace number batches and provide third-party material certifications to ensure compliance with international standards.

Q6: Is technical support available for installation?

We offer comprehensive technical services including installation tool selection guidance, on-site failure analysis, and BOM optimization to ensure your assembly is efficient and safe.