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China Cup Head Bolt Manufacturer, Supplier, Factory

For high-performing bolting solutions, our industry-leading Cup Head Bolt is engineered for superior strength and reliability. These bolts are the ideal choice for heavy-duty applications where a secure fastening is critical. While they share some design principles with other specialized bolts, such as the Dome Head Bolt, our Cup Head Bolts are uniquely designed to withstand higher torque and provide exceptional load distribution. They are perfect for machinery assembly, structural frameworks, and automotive systems. If you are looking for a robust alternative or a complementary product, consider the Dome Head Bolt for applications requiring a smooth, rounded head finish.


The Cup Head Bolt is specifically manufactured to meet the highest industrial standards, ensuring durability and long-term performance in even the most demanding environments. Its design focuses on providing a secure grip and minimizing the risk of loosening under vibration or dynamic loads. The precision engineering behind the Cup Head Bolt guarantees consistent quality and reliable fastening across various applications.

Key Product Parameters

  • Material: High-grade alloy steel, stainless steel, or carbon steel
  • Head Type: Cup head design for enhanced torque application
  • Thread Type: Fully threaded or partially threaded options available
  • Surface Treatment: Zinc plating, hot-dip galvanizing, or black oxide coating
  • Standards Compliance: Meets ASTM, ISO, and DIN specifications
  • Applications: Heavy machinery, construction, automotive, and industrial equipment
Size (Diameter x Length) Material Grade Torque Capacity (Nm) Recommended Load (kN)
M6 x 20 mm Grade 8.8 10 Nm 12 kN
M8 x 30 mm Grade 10.9 25 Nm 20 kN
M10 x 40 mm Stainless Steel A2-70 45 Nm 30 kN
M12 x 50 mm Grade 12.9 80 Nm 45 kN
M16 x 60 mm Carbon Steel 160 Nm 70 kN

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