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Hex Flange Bolts
This product features a hexagonal head and integrated flange structure, cold-forged, with anti-slip teeth on the flange face for enhanced anti-loosening effect. It can replace flat washers, has precise threads for a secure connection, and prevents scratches on the workpiece surface. The full range covers mainstream specifications, is readily available, and features rust-proof treatments such as galvanizing and Dacromet coating. It complies with environmental regulations through quality control, and compliance documentation can be provided. Custom sizes for non-standard flanges are also supported.
- Executive Standard
- Specification Range
- Grade & Strength
- Common Materials
- Surface Treatment
- Surface Treatment
- Industry Classification
GB/T 16674.1, GB/T 16674.2, GB/T 5789 (Extra Large Series); International Standard ISO 4162; American Standard ANSI/ASME B18.2.1; German Standard DIN 6921
Metric specifications: Thread sizes M3~M24, nominal lengths 5mm~200mm, available in full thread and partial thread types; flange faces are available in two main categories: anti-slip toothed type and flat type. Imperial specifications: Thread sizes #4-40~1"-8", nominal lengths 1/4"~8", compatible with UNC/UNF American standard thread systems.
Carbon steel grades 4.8, 6.8, 8.8, 10.9, and 12.9; stainless steel grades A2-50, A2-70, A4-70, and A4-80; non-ferrous metals grade not lower than 4.8.
High-quality low-carbon steel, medium-carbon steel, alloy steel, 304 stainless steel, 316 stainless steel, brass, aluminum alloy, etc.
Environmentally friendly blue-white zinc, colored zinc, black zinc, environmentally friendly nickel plating, zinc-nickel alloy plating, Dacromet coating, electrophoresis, PVD, stainless steel natural color, stainless steel passivation, etc.
For automotive parts, home appliances, machinery and equipment, outdoor facilities, etc., suitable for scenarios requiring anti-loosening and pressure distribution, the flange face can replace flat gaskets to prevent scratches on the workpiece surface.
Do you need non-standard fasteners, precision metal parts, or custom structural components for a specific application?
Yongji helps you develop and manufacture special parts and custom products based on your drawings, samples, technical requirements, and target application scenarios.
Whether you need prototype quantities, pilot production, or stable mass supply, we provide an integrated solution from engineering review to production and delivery.
From fasteners to structural parts, Yongji offers integrated development and manufacturing for a wide range of custom precision hardware products.
Whether you need a few pieces for validation, small batches for development, or large volumes for mass production, we can support your project at different stages.
With integrated manufacturing resources in China and Vietnam, Yongji helps customers achieve stable quality, scalable production, and reliable delivery.
Yongji Precision Hardware is a global manufacturer specializing in precision fasteners and metal structural components. We are China Hex Flange Bolts Suppliers and Wholesale Hex Flange BoltsExporter && Company. Founded in 2003, the company has over two decades of experience serving international OEM and ODM customers across multiple industries.
With integrated manufacturing capabilities including cold heading, stamping, CNC machining and sheet metal fabrication...
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