With the wide application of new energy vehicles, hybrid power, direct fuel injection, high supercharging and other technologies, the engine and power system bear higher thermal stress, vibration load and mechanical load during operation, which puts forward higher requirements on the material performance, structural design and manufacturing accuracy of screws.
Scientific selection of high-performance screws meeting engineering standards is the foundation for long-term stable and efficient operation of the automotive power system.
Application Scenarios and Requirements for Screws of Main Engine Components
Connection Between Cylinder Head and Cylinder Block
The connection between the cylinder head and the cylinder block must withstand high-temperature and high-pressure combustion impact as well as cyclic thermal stress. High-strength, high-temperature and fatigue-resistant heat-treated screws or customized alloy screws are typically used to ensure stable clamping force under long-term operating conditions.
Main Bearing / Connecting Rod Bearing Cap Screws
Main bearing and connecting rod bearing cap screws operate under high-frequency rotation and cyclic loading, requiring extremely high fatigue resistance and dimensional consistency. High-strength precision screws of Grade 10.9 or 12.9 are commonly selected to ensure uniform stress distribution and long-term stability.
Timing System and Supercharger Assembly
Components such as the timing system, water pump and turbocharger place strict demands on anti-loosening performance and high-temperature resistance. Anti-loosening structural screws, heat-resistant steel screws and specially surface-treated screws are widely used to cope with continuous vibration and high-temperature environments.
The Importance of Reliable Screw Suppliers to Automotive Powertrain Systems
In vehicle manufacturing and aftermarket maintenance, high-precision and highly reliable automotive screws directly affect vehicle performance and safety, while also determining the durability and long-term operating cost of the power system.
- Reduce structural or functional failures caused by screw loosening or fatigue
- Improve the overall operating efficiency of the engine and power system
- Optimize maintenance cycles and reduce long-term maintenance costs
- Meet safety requirements under high load, high temperature and high vibration conditions
Advantages of Yuhuang Screws in Engine and Power Systems
Yuhuang Fastener has long been dedicated to the research, development and manufacturing of automotive engine and power system screws, supported by:
- Proven materials engineering and structural design capabilities
- Strictly controlled heat treatment processes
- CNC precision machining and automatic full inspection systems
- Extensive experience in high-strength, anti-loosening and high-temperature screw design
With stable and reliable screw products, YH FASTENER helps automakers significantly improve the safety, reliability and durability of power systems, becoming a trusted long-term partner.
Post time: Dec-20-2025
