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 603 CARRIGE BOLT |
| Material | Stainless steel, alloy steel |
| Standard | DIN603 |
| Grade | 12.9 |
| Diameter | M5,M6,M8,M10,M12,M16,M20 |
Dimension table：
| Size | M5 | M6 | M8 | M10 | M12 | M16 | M20 |
| P | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 |
| DK | 13.55 | 16.55 | 20.65 | 24.65 | 30.65 | 38.8 | 46.8 |
| DK | 12.45 | 15.45 | 19.35 | 23.35 | 29.35 | 37.2 | 45.2 |
| S | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
| S | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 |
| K | 2.7 | 3.12 | 4.12 | 4.62 | 6.05 | 8.06 | 9.95 |
| K | 3.3 | 3.88 | 4.88 | 5.38 | 6.95 | 8.95 | 11.05 |
Product Details：
Carriage bolts are fasteners with a round or semi-round head and a square cross-section neck. They need to be used in conjunction with nuts to connect parts with through holes. Its implementation standards cover Chinese GB/T12, GB/T14 and German DIN603 systems, etc. The materials include carbon steel, stainless steel, etc., and the surface treatment methods cover galvanizing, blackening and other processes. The product diameter range is 5mm to 20mm, and the mechanical performance grade can reach up to 12.9. The patented technology enhances the pressure-bearing performance through a buffer structure and anti-torque design
Structural features：
The head adopts a round head or a large semi-round head design, with a square neck set below to prevent the bolt from rotating during installation
The screw part is equipped with external threads, which work in conjunction with the nut to achieve a fastening function. The thread types include metric coarse threads, fine threads, and imperial specifications
The new patented product strengthens the connection structure through the combined design of a rubber buffer pad layer and a curing agent inside the fiberglass reinforced plastic shell
Application field：
It is mainly used in the fields of steel structure connection, wood structure assembly and mechanical equipment manufacturing
The square neck structure is suitable for pre-embedded installation scenarios to prevent the bolts from rotating during the fastening process
The patented buffer type bolt is applied to the connection parts of construction machinery with large vibration loads
Production process:
The cold heading forming process ensures the accuracy of the bolt head, and the thread rolling processing ensures dimensional consistency
Surface coating treatment includes processes such as galvanizing (blue-white zinc/colored zinc) and nickel plating, with a coating thickness of 5-8μm
The straightness detection standard requires that the full-length curvature does not exceed 0.5mm/m
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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