Company Profile：
Handan Trina Metal Co., . is a comprehensive manufacturing enterprise specializing in the research and development, production, sales and service of fasteners. It focuses on the customized production of high-end fasteners that are resistant to high pressure, high and low temperatures, and corrosion. The company takes a full-chain layout as its core advantage, covering raw material procurement, precision processing, personalized customization, centralized procurement, professional packaging, efficient logistics and worry-free after-sales services. It provides customers with one-stop fastener solutions.
Products Description：
| Product Name | DIN 444 EYE BOLT |
| Material | Stainless steel, alloy steel |
| Standard | DIN EN ISO 898-1 b |
| Grade | 8.8,A2-70,A4-70 |
| Diameter | M5,M6,M8,M10,M12,M16,M20,M24 |
Dimension table：
| Size | M5 | M6 | M8 | M10 | M12 | M16 | M20 | M24 |
| p | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | 3 |
| d2 | 5.07 | 6.07 | 8.08 | 10.08 | 12.095 | 16.096 | 18.096 | 22.11 |
| d2 | 5.145 | 6.145 | 8.17 | 10.17 | 12.205 | 16.205 | 18.205 | 22.24 |
| s | 6 | 7 | 9 | 12 | 14 | 17 | 22 | 25 |
| s | 5.52 | 6.42 | 8.42 | 11.3 | 13.3 | 16.3 | 21.16 | 24.16 |
| r | 4 | 6 | 6 | 6 | 9 | 9 | 9 | 15 |
| r | 2 | 3 | 3 | 3 | 4.5 | 4.5 | 4.5 | 7.5 |
Product Details：
The 444 eye bolt (DIN444 live joint bolt) is a fastener that complies with the German standard DIN444. It is called a hole eye bolt in China and a fish-eye bolt abroad.
Structural features：Youdaoplaceholder0 Head type : Live joint head design, high spherical surface finish, and relatively high thread accuracy.
Youdaoplaceholder0 Material : Common materials include carbon steel, stainless steel (such as 304, 316), etc.
Youdaoplaceholder0 Surface treatment : anti-corrosion measures such as hot-dip galvanizing, diffusion galvanizing, whitening, and color galvanizing.
Application scenarios：
Youdaoplaceholder0 Industrial field : Widely applied in scenarios such as low-temperature and high-pressure valves, oil drilling and production equipment, fluid engineering, and pressure pipelines.
特殊场景：如阀门行业,折叠式自行车,童车等需要频繁拆装的场合.
Specification range：
Youdaoplaceholder0 thread specification : M6 to M64, in compliance with GB/T798-88 or DIN444 standards.
Youdaoplaceholder0 Non-standard customization : Supports special requirements such as extended union sleeves and enlarged holes.
Quality inspection
Why choose TRINA?
Relying on advanced production equipment, a complete detection system and the enterprise technology center, we strictly control every process from raw materials to finished products, achieving online monitoring throughout the process to ensure excellent and stable product quality. With competitiveness in supply chain support, logistics efficiency, cost optimization and product diversity, we continuously provide high-reliability fasteners for industries such as energy, chemicals, transportation and machinery, always adhering to the concept of "quality first, customer first", and striving to become a global leading fastener manufacturing service provider.
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