







Discover the unparalleled versatility of our high-strength black hexagonal cylindrical screws, essential fasteners across diverse industries including mechanical equipment, furniture, electronic devices, and automotive sectors. Allow us to present an in-depth exploration of these exceptional screws, designed for excellence in every application:
1, Characteristics
1. High strength: Crafted from superior low-carbon alloy steel or medium carbon steel, these screws undergo meticulous heat treatments such as quenching and tempering, achieving exceptional grades of strength. The standard strength levels are 8.8, 10.9, and an impressive 12.9, marking the pinnacle of durability and robustness.
2. Corrosion resistance: Enhanced with a specialized blackening treatment, these screws boast a dense oxide film that significantly boosts their resistance to corrosion, ensuring longevity even in the most challenging environments.
3. Inner hexagon design: Ingeniously crafted with an inner hexagon head, these screws facilitate seamless operations with an inner hexagon wrench or electric tool, greatly enhancing user efficiency and ease of use.
4. Cylindrical head design: The sleek cylindrical head allows these screws to be expertly employed in confined spaces, all while maintaining the pristine appearance of the installation surface.
2, Specification and Model
Our high-strength black hexagonal cylindrical screws are available in a wide array of specifications and models to suit any requirement. From M2 to M12 and lengths spanning mere millimeters to several tens, find the perfect fit for every occasion. Customization options are available to meet unique and specialized demands.
3, Application scenarios
1. Mechanical equipment: Widely indispensable in the assembly and maintenance of mechanical marvels such as cars, motorcycles, bicycles, and machine tools, these screws ensure unwavering stability and safety.
2. Furniture manufacturing: Elevate the structural integrity of furniture with hexagonal socket head screws, crucial for a robust assembly of chairs, beds, tables, and more, promising enduring stability.
3. Electronic devices: An essential in the compact assembly of electronics like computers, mobile phones, and televisions, these screws offer reliable connections while optimizing space efficiency.
4. Construction engineering: In the realm of construction, these screws are vital for connecting monumental steel structures and bridges, safeguarding the structural stability and safety.
4, Precautions
1. Choose the appropriate strength grade: Ensure optimal performance by selecting the right strength grade tailored to the specific usage scenario and stress levels, avoiding both underperformance and excess.
2. Correct tightening torque: Utilize suitable tools to achieve the perfect tightening torque, preventing complications from over tightening or excessive loosening.
3. Anti-loosening measures: Enhance the screws' anti-loosening capabilities by incorporating spring washers or applying anti-loosening glue, especially in critical applications.
5, Price and purchasing advice
Pricing of our high-strength black hexagonal cylindrical screws is influenced by their specifications, models, materials, and quantity purchased. Larger, stronger, and superior material screws command a premium. We advise purchasing from credible sources like reputable hardware stores, e-commerce platforms, or official brand websites to ensure exceptional quality and service. Select specifications and models that precisely align with your distinct requirements.