China Suppliers Factory Flange Hex Nuts A2-70/A4-80 Stainless Steel DIN 6923 Serrated Anti-Loosening
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
Multi-Material & Full Strength Series
Our flange hex nuts are made of AISI 304/316/201 stainless steel or 45#/10B21 alloy steel, with strength grades including stainless steel A2-70 (304), A4-80 (316), and carbon steel grades 8/10. The 316 stainless steel variant offers excellent chloride corrosion resistance, passing ≥720 hours of salt spray testing to withstand coastal and humid environments. Carbon steel options with electro galvanizing, hot-dip galvanizing, or Dacromet coating balance high strength and rust/wear protection. Thread sizes range from M3 to M24 with custom options available.
One-Piece Flange + Serrated Anti-Slip Design
Manufactured to international standards including DIN 6923, GB/T 6177.1, and ISO 4161, our nuts feature an integrated flange and serrated anti-slip base. The flange replaces flat washers to distribute pressure evenly and protect workpiece surfaces, while the serrated teeth bite into the contact surface during tightening to create a mechanical lock against vibration-induced loosening. This dual-protection design ensures stable performance under alternating loads in high-dynamic applications.
Washerless Quick-Install Design
The one-piece structure eliminates the need for separate flat washers, simplifying installation: simply thread the nut onto the bolt and tighten with a standard wrench, with the flange providing automatic alignment. Stainless steel nuts with passivated/polished finishes are suitable for hygiene-sensitive applications without coating contamination, while galvanized carbon steel versions offer enhanced corrosion resistance for outdoor use.
Application Scenarios
High-Quality Stainless Steel Flange Nut Display
Frequently Asked Questions (FAQ)
What materials are your flange hex nuts available in?
We offer nuts in AISI 304, 316, and 201 stainless steel, as well as 45# and 10B21 alloy steel for high-strength requirements.
Do these nuts comply with international manufacturing standards?
Yes, our products are manufactured according to DIN 6923, GB/T 6177.1, and ISO 4161 standards to ensure global compatibility.
What is the advantage of the serrated anti-slip design?
The serrated teeth bite into the contact surface during tightening, creating a mechanical lock that prevents loosening caused by high-intensity vibrations.
Can I request custom sizes or surface treatments?
Absolutely. We provide flexible customization for thread sizes (M3-M24), special materials, specific coating colors, and personalized packaging.
Are these nuts suitable for marine or outdoor environments?
Yes, our 316 stainless steel variant is specifically designed for chloride corrosion resistance, and our galvanized carbon steel options provide excellent rust protection for outdoor use.
How do you ensure the quality of the raw materials?
We implement raw material source locking and full furnace number batch traceability, supported by third-party material certifications.