304/316 Stainless Steel Hex Nuts A2-70/A4-80 Grade Metric Hexagon Nuts DIN 934 Standard for Industrial Fastening
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
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Multi-Material & Multi-Grade Options for Corrosion Resistance & High Strength
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.
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Standard Hexagon & Precision Threads for Reliable Grip
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.
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Complete Specifications & Easy Installation for Versatile Bulk Assembly
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
Industrial Capabilities
• Factory Area: 8,000 square meters
• Certifications: ISO, IATF, CE, RoHS, JIS, ASTM
• Manufacturing : 70+ internationally advanced production lines
• Testing: 30+ sets of precision quality testing equipment
• Annual Output: Up to 50,000,000 tons
From Raw Materials to Final Products
Our factory's fully automated production lines for cold heading, precision thread rolling, controlled-atmosphere heat treatment, and eco-friendly surface finishing enable closed-loop manufacturing from raw material to finished product. Because of inline optical sorting and a digital MES, each fastener meets stringent standards for strength, accuracy, and surface quality. You guarantee the best fasteners, which are dependable, efficient, and eco-friendly.
Lab for Innovation:
Are you working on any projects? Let's move on now. We are always looking for new ideas, and our progress is fueled by talent and teamwork. Are you engaged in a project? Let's move on now.
"Pain Point Diagnosis" to "Customized Implementation" in the Entire Joint R&D Process
We provide more than just traditional parts. From the beginning of your project, our multicultural engineering team actively contributes. We carefully consider the application context and customize solutions in the lab, fully integrating technology and application, to guarantee that innovative ideas are quickly transformed into practical solutions that save total lifetime costs.
Integrated Verification System: Using "Test Data" to Assure Innovation
The creative process doesn't finish at the drawing board. We offer one-stop verification for everything from corrosion testing to prototype development through our in-house technical center. We employ empirical data to verify the performance stability of customized solutions through comprehensive simulated working condition tests. In addition to achieving genuinely dependable cost reduction and efficiency improvement, this considerably lowers project risks.
