







High-strength hexagonal screws, particularly the robust large hexagonal bolts, are essential fasteners extensively utilized in the realms of industrial fields and engineering structures. Below is a comprehensive exploration of the impressive high-strength hex screws:
1, Definition and Classification
High-strength hexagonal screws, especially the formidable large hexagonal bolts, fall into the category of high-strength bolts, featuring a hexagonal head that facilitates easy tightening with a wrench. These bolts boast a performance grade typically above 8.8, with popular grades being 8.8, 10.9, and 12.9, among others. The higher the grade, the greater its formidable strength and load-bearing capacity.
2, Characteristics and Advantages
1. High Strength: Crafted from superior materials like high-quality alloy steel, high-strength hex screws undergo meticulous heat treatment processes, endowing them with exceptional tensile and yield strength to withstand substantial loads.
2. Excellent Toughness: These high-strength hex screws are engineered to maintain remarkable toughness, minimizing the risk of brittle fracture even when subjected to heavy loads.
3. Exceptional Connection Performance: By pairing with nuts, high-strength hex screws offer unparalleled connection performance, ensuring stability of connected parts under significant loads.
4. Effortless Installation and Removal: Featuring a hexagonal head design, these screws are effortlessly tightened or removed with the use of a wrench.
3, Application Fields
High-strength hexagonal screws find extensive application in the following domains:
1. Construction of Steel Structures: Integral to high-rise buildings, bridges, and large factories, these screws connect steel columns, beams, and various components.
2. Mechanical Equipment Manufacturing: Utilized in engineering machinery, mining machinery, and automotive manufacturing, these screws connect diverse equipment components.
3. Power Facilities: Key to substations and transmission towers, these screws join various tower components in power infrastructure.
4. Other Industries: High-strength hexagonal screws are indispensable in wind power, petrochemicals, railway tracks, subways, and shipbuilding, among other fields.
4, Precautions for Use
1. Selecting the Appropriate Strength Grade: Opt for the correct strength grade based on the application scenario and stress requirements to avoid underperforming strength or unnecessary excess.
2. Applying Correct Preload Force: During installation, adhere strictly to the specified preload force as per design requirements to guarantee reliable and stable connections.
3. Preventing Loosening: Regularly inspect connection parts for potential looseness during prolonged use and implement suitable anti-loosening measures.
5, Surface Treatment
To suit diverse environmental demands, high-strength hex screws can undergo various surface treatments such as galvanizing and blackening, enhancing their corrosion resistance and prolonging their lifespan.
In conclusion, high-strength hex screws hold a pivotal role in industrial and engineering structures due to their unmatched strength, resilience, reliable connections, and straightforward installation and removal. When utilizing, ensure selecting appropriate specifications and models tailored to specific needs and strictly adhere to design requirements for installation and use.