







Experience the unparalleled versatility and reliability of our Black Hexagon Cup Screws with Half Thread. These high-strength black hexagonal cylindrical screws are essential fasteners used across multiple fields, from mechanical equipment and furniture to electronic devices and automobiles. Discover more about these indispensable tools:
1, Characteristics
1. High strength: Crafted from premium low-carbon alloy steel or robust medium carbon steel, these black hexagonal cylindrical screws undergo sophisticated heat treatments like quenching and tempering. This ensures they achieve remarkable high-strength grades, commonly 8.8, 10.9, and an impressive 12.9, which is the pinnacle of strength levels.
2. Corrosion resistance: The screws are enhanced with a blackening surface treatment, creating a dense oxide film. This significantly boosts their corrosion resistance, allowing them to endure even the harshest environments over extended periods.
3. Inner hexagon design: Designed with an inner hexagon head, these screws facilitate easy tightening or loosening using an inner hexagon wrench or electric tool, enhancing work efficiency and precision.
4. Cylindrical head design: Featuring a streamlined cylindrical head, these screws easily fit into narrow spaces without compromising the installation surface's aesthetics.
2, Specification and Model
With a diverse range of specifications and models, our high-strength black hexagonal cylindrical screws cater to varied requirements. Popular specifications include M2, M2.5, M3, M4, M5, M6, M8, M10, and M12, with lengths spanning from a few millimeters to several tens of millimeters. We also offer customization options to meet clients' exact specifications.
3, Application scenarios
1. Mechanical equipment: These robust screws are indispensable in assembling and maintaining mechanical equipment like cars, motorcycles, bicycles, and machine tools, ensuring optimal stability and safety.
2. Furniture manufacturing: In furniture production, hexagonal socket head screws are integral to assembling items like chairs, beds, and tables, enhancing their structural strength and stability.
3. Electronic devices: Perfect for assembling compact electronic devices, from computers and mobiles to televisions, our high-strength black hexagonal cylindrical screws offer reliable connections while conserving space.
4. Construction engineering: In the realm of construction, these screws are pivotal for linking large mechanical structures, such as steel frameworks and bridges, ensuring the utmost stability and safety of edifices.
4, Precautions
1. Choose the appropriate strength grade: Select the right strength grade tailored to the specific usage scenario and stress conditions to prevent strength deficiencies or excess.
2. Correct tightening torque: Employ the correct tools and torque specifications for tightening to avert potential problems from improper tightening levels.
3. Anti loosening measures: For applications requiring anti-loosening features, consider using spring washers or applying anti-loosening glue to enhance the screws' integrity.
5, Price and purchasing advice
The cost of our high-strength black hexagonal cylindrical screws varies based on specifications, models, materials, and order volumes. Generally, larger screws with higher strength grades and superior materials are priced higher. For guaranteed quality and service, we recommend purchasing from esteemed hardware stores, trusted e-commerce platforms, or official brand websites. Choose the specifications and models that best fit your precise needs when making your purchase.