Hexagon head non-ejectable bolts DIN7964, also known as hexagon head non-stripping screws, are unique in that the head of the bolt is hexagonal, making it easy to install and remove using tools such as spanners. The bolt body is partly threaded and girdled, and the diameter of the girdled section is smaller than the small diameter of the thread, which makes the bolt able to be clamped in the mounting holes of the connected parts after installation, and effectively prevents the bolt from loosening or falling off.

GB838/DIN7964 bolts are usually made of high-strength alloy steel material, and the hardness level can be up to 12.9, which can meet the needs of various high-load connections. In addition, the surface of the bolt is plated with blue and white zinc, which not only improves the corrosion resistance of the bolt, but also increases its aesthetics.

Unique advantages of Excellent anti-dislodgement performance: thanks to its unique girdle design, GB838 bolts are able to maintain a stable connection in vibration or shock environment, effectively preventing the bolt from loosening or falling off, ensuring the safe operation of the equipment or structure.

Installation Convenience: The hexagonal head design makes the installation and dismantling process of the bolt easier and quicker, which improves the working efficiency. At the same time, the standardised size specification is also easy to match with different brands and models of nuts.

Wide applicability: GB838 bolts are suitable for a variety of materials and structures, including metal, non-metal and composite materials. Its high strength and excellent anti-dislodgement properties make the bolts have a wide range of applications in various fields.

Scope of 

application

Mechanical equipment: In mechanical equipment, GB838 bolts are commonly used to connect key components that need to withstand greater vibration or impact, such as engines, gearboxes, drive shafts and so on. Its excellent anti-dislodgement performance can ensure the stable operation of the equipment in harsh working conditions.

Automotive manufacturing: In the field of automotive manufacturing, GB838 bolts are widely used in the body structure, chassis system and powertrain and other key parts of the connection. Their high strength and ease of installation help improve the safety and reliability of automobiles.

Construction Engineering: In construction engineering, GB838 bolts can be used to connect heavy components such as steel structures and bridges. Its excellent anti-dislodgement performance ensures the stability and safety of building structures and plays an important role in natural disasters such as earthquakes.

In addition, GB838 bolts have a wide range of applications in aerospace, petrochemical, rail transport and other industrial fields.