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304/316 Stainless Steel Hex Nuts A2-70/A4-80 from China Suppliers - OEM Factory Standard DIN 934

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Name: Hex Nut (Hexagon Nut)
Material: AISI 304/316 Stainless Steel (corrosion resistant, rust resistant), Q235, 45# Steel, Alloy Steel
Standards: GB/T 6170, DIN 934, ISO 4032, ANSI B18.2.2
Grade: A2-70 (304)/A4-80 (316), Grade 4/8/10/12 (Carbon steel optional)
Specifications: M1.6-M64 (customizable)
Surface Treatment: For Stainless Steel - Natural Polished/Passivated (No Coating, Corrosion Resistant), For Carbon Steel - Electroplated Zinc (Blue-White Zinc/...) Color zinc plating, hot-dip galvanizing, blackening treatment, Dacromet coating (optional)
Design Features: Designed in a standard hexagonal shape with high-precision threads, our hex nuts offer multiple material options, complete specifications, and strong stability.
Applications: Widely used in machinery manufacturing, construction engineering, the automotive industry, outdoor and marine applications, as well as general assembly.
Delivery Time: 15-30 days after receiving advance payment
Origin: China - Your trusted source for high-quality nut products.
Brand: JGD
Minimum Order Quantity: 10,000 pieces, negotiable
Samples: Available upon request
Packaging: Available in boxed, bulk, pallet, or customized packaging options
OEM: Custom solutions available
As a leading manufacturer and suppliers in China, we ensure the highest quality products from our factory to meet your needs.

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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

    ⚙️ 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
    Multi-Material Options

    💎 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, fully suited for mechanical, construction and automotive applications.

    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 for high reliability.

    Complete Specifications

    📦 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 with stable stock and delivery.

    🌟 Application Scenarios

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    🎥 High-Quality Hex Nut Display

    ❓ Frequently Asked Questions

    Q1: What materials are used for your hex nuts?
    We offer 304 and 316 stainless steel (A2-70/A4-80), as well as carbon steel in grades 4, 8, 10, and 12, including Q235 and 45# alloy steel.
    Q2: Which international standards do your products comply with?
    Our hex nuts are manufactured strictly according to GB/T 6170, DIN 934, and ISO 4032 international standards.
    Q3: Do you provide surface treatments for corrosion resistance?
    Yes, we provide various treatments including polishing, passivation, galvanizing, black oxide, and Dacromet coating to suit different environments.
    Q4: Can I request custom sizes or packaging?
    Absolutely. we offer flexible customization for dimensions, material specifications, surface colors, and personalized labeling/packaging.
    Q5: Are these nuts suitable for marine or outdoor use?
    Yes, our 316 stainless steel options are specifically designed for high-salinity marine environments and outdoor applications requiring superior rust resistance.
    Q6: Do you offer technical support for product selection?
    Yes, our technical services include selection calculations, BOM optimization, failure analysis, and guidance on installation tools.