Carbon Steel EN 14399-7-2018 System HR-Countersunk head bolt
Product Overview:
System HR-Countersunk head bolt is a kind of high strength fastener specially used for steel structure. These bolts are usually made of high-strength steel and have high yield strength and tensile strength. The slotted countersunk design allows the bolt head to be fully embedded into the connector, ensuring a flat surface. It is mainly used in applications requiring high strength connections and smooth surfaces, such as steel structures, Bridges and construction projects.
Grade:
4.8, 6.8, 8.8, 10.9, 12.9
Carbon Steel EN 14399-7-2018 System HR-Countersunk head bolt Details
System HR-Countersunk head bolts are widely used in various heavy equipment, infrastructure construction, military and aerospace fields.
Functional characteristics
Application
Functional characteristics
- High strength material: Made of special alloy steel and subjected to a rigorous heat treatment process to achieve exceptional hardness and toughness, ensuring stability in high compression and high tension environments.
- One-slot design: The one-slot design of the bolt head facilitates accurate tightening or loosening operation with universal tools, improving construction efficiency while reducing the risk of damage caused by improper tool matching.
- Precision countersunk construction: The countersunk design allows the bolt head to fully sink into the reserved hole, achieving a flat surface without protrusions-which is essential for reducing aerodynamic drag, preventing wear, and improving overall aesthetics.
- Corrosion resistant coating: The standard configuration contains multiple layers of protective coating to effectively resist salt spray erosion and chemical damage, and extend the service life of bolts, especially in harsh conditions such as Marine environments or chemical plants.
Application
- Bridge and tunnel construction: plays a key role in supporting beams, connecting concrete structures and seismic reinforcement to ensure long-term stability.
- Rail transit: Fixed components in train cars, rail fasteners and signal systems to ensure passenger safety and smooth operation.
- Heavy construction machinery: Key component connections on excavators, cranes and bulldozers to withstand frequent vibrations and heavy loads.
- Military equipment and spacecraft: High-strength bolts play an important role in armored vehicles, missile launchers, satellite structures and rocket boosters and must meet extremely demanding service conditions.
