Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of stainless steel 304 hex bolt a2-70 din931 in China. Welcome to buy bulk high quality stainless steel 304 hex bolt a2-70 din931 made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
Key Parameters
|
Standard |
German standard DIN931 (for some threads) |
| Material grade | A2-70 (304 stainless steel) |
| Product specifications | Metric M6-M36 (customizable) |
| Surface treatment | Natural color / Degreasing treatment |
Material and Performance
This product is made of high-quality 304 stainless steel (Grade A2). It has excellent corrosion resistance and can effectively resist corrosion from common atmospheric conditions, water, weak acids, and weak bases. After precise cold heading or turning processing, it reaches the A2-70 performance level, with an ultimate tensile strength of no less than 700 MPa. It combines high strength with excellent plasticity, ensuring that it is less likely to break during fastening.
Structural features
Complies strictly with the DIN931 standard and adopts a partial thread (semi-thread) design. The threaded part is without threads, which not only reduces stress concentration, significantly enhances the shear resistance of the bolt, but also facilitates positioning and installation, and is particularly suitable for scenarios with high requirements for connection accuracy and shear strength.
Packaging and Service
The product is packaged in a sealed and rust-proof manner. Customization is supported. 304 material nuts and washers can be provided as accessories to ensure the consistency of the material of the connection pair, meeting the requirements of batch purchases and project matching.
Good Quality VS Bad Quality
Application scenario
It is widely applied in fields such as food machinery, medical equipment, chemical equipment, environmental protection projects, building curtain walls and outdoor facilities. This product takes into account both corrosion resistance and high strength requirements, and is particularly suitable for humid environments or working conditions with high hygiene standards. It is a cost-effective fastening option for general industrial applications.
Surface treatment
The surface of the product has a natural metallic luster. After being subjected to passivation treatment, its corrosion resistance is further enhanced, and the surface processing residues are removed to maintain a clean and attractive appearance. The surface is uniform and consistent, making it suitable for applications where appearance is a requirement.
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