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304/316 Stainless Steel Hex Nuts A2-70/A4-80 - China Suppliers & Factory for Industrial Fastening

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Name: Hex Nut (Hexagon Nut)
Material: Crafted from AISI 304/316 Stainless Steel, our hex nuts offer exceptional corrosion and rust resistance. Other material options include Q235, 45# Steel, and Alloy Steel to meet various industrial needs.
Standards: Complies with GB/T 6170, DIN 934, ISO 4032, ANSI B18.2.2, ensuring high-quality manufacturing standards.
Grade: Available in .A2-70 (304)/A4-80 (31for stainless steel and Grade 4/8/10/12 for carbon steel options.
Specifications: Ranges from M1.6 to M64, with customizable sizes available to fit your project requirements.
Surface Treatment: Stainless Steel versions come naturally polished or passivated for corrosion resistance. Carbon Steel options include electroplated zinc (blue-white zinc/...) color plating, hot-dip galvanizing, blackening treatment, and Dacromet coating.
Design Features: Our hex nuts feature a standard hexagonal shape, high-precision threads, and are available in multiple materials and specifications, ensuring strong stability and compatibility for various applications.
Applications: Ideal for machinery manufacturing, construction engineering, the automotive industry, outdoor and marine use, and general assembly tasks.
Delivery Time: Orders will be processed and delivered within 15-30 days after receipt of advance payment.
Origin: Proudly manufactured in China, our factory guarantees quality and efficiency.
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable to suit your business needs.
Samples: Available upon request to ensure product satisfaction.
Packaging: Offered in boxed, bulk, pallet, or customized packaging for convenience.
OEM: We welcome OEM requests to meet specific customer requirements.

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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
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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
    Metallographic & Mechanical Lab
    Quality Control System
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    Quality Control System

    Raw Material Source Locking
    Full Batch Traceability
    Third Party Material Certification
    Transparent Process Parameters
    Real Time Salt Spray Monitoring
    International Standard Compliance
    Flexible Customization
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    Flexible Customization

    Customizable Head/Slot Shapes
    Special Material Applications
    Extra Large/Long Specifications
    Integrated Component Assembly
    Custom Surface Treatment Colors
    Personalized Packaging & Labeling
    Technical Service
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    Technical Service

    On-Site Failure Analysis
    BOM Optimization & Calculation
    Installation Tool Guidance
    Inventory Management (VMI)
    Free Sample Making & Testing
    Standard Translation Services
    Stainless Steel Hex Nuts

    🚀 Multi-Material & Multi-Grade Options

    Our hex nuts are available in 304/316 stainless steel (A2-70/A4-80) and carbon steel grades 4/8/10/12, with materials including Q235, 45# steel and alloy steel. Polished and passivated stainless steel offers natural rust resistance, ideal for outdoor and marine salt spray environments. Carbon steel can be treated with galvanizing, black oxide or Dacromet coating for enhanced wear and corrosion protection. Sizes range from M1.6 to M64 with both coarse and fine thread options.

    Precision Threads

    💎 Standard Hexagon & Precision Threads

    Manufactured to GB/T 6170, DIN 934 and ISO 4032 standards, the standard hex shape fits all common wrenches for universal compatibility. High-precision rolled threads ensure uniform pitch and tight engagement with bolts, preventing slippage or loosening under vibration. Strict hardness and accuracy control deliver excellent tensile and anti-loosening performance, maintaining stable connections even under long-term heavy loads.

    Easy Installation

    📦 Complete Specifications & Easy Installation

    With a full range of sizes and custom options available, these nuts work seamlessly with standard bolts and studs. Installation is flexible: they can be tightened manually or with torque wrenches for precise control, no special tools required. Widely used in machinery manufacturing, construction, automotive, marine equipment and general assembly, they are ideal for engineering procurement, wholesale and factory bulk supply.

    Application Scenarios

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    High-Quality Hex Nut Display

    Frequently Asked Questions

    ❓ What materials are your hex nuts available in?
    We offer hex nuts in 304 and 316 stainless steel (A2-70/A4-80) for superior corrosion resistance, as well as carbon steel grades 4, 8, 10, and 12 for high-strength applications.
    ❓ Do your products comply with international standards?
    Yes, our manufacturing process strictly follows DIN 934, ISO 4032, and GB/T 6170 standards to ensure universal compatibility and high reliability.
    ❓ Can I request a custom surface treatment?
    Absolutely. We provide various coatings including galvanizing (zinc plating), black oxide, Dacromet, and passivation to suit different environmental requirements.
    ❓ What is the available size range for bulk orders?
    We supply a full range of sizes from M1.6 up to M64, supporting both coarse and fine thread specifications for diverse industrial needs.
    ❓ Do you offer technical support for fastener selection?
    Yes, we provide technical services such as selection calculation, BOM optimization, on-site failure analysis, and installation tool guidance.
    ❓ Is it possible to get samples before placing a large order?
    We offer free sample making and testing services to ensure the products meet your specific application requirements before bulk production.