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China domed cap nut Manufacturer, Supplier, Factory

Domed cap nuts are an essential component in various industrial and construction applications, providing both secure fastening and a sleek, finished appearance. These nuts feature a domed top that covers the exposed end of a bolt, protecting threads from damage and enhancing safety by eliminating sharp edges. Our high-quality cap nut options are designed for durability and reliability in demanding environments. For applications requiring vibration resistance, our innovative Self-locking dome nut ensures a secure hold without loosening under stress. Ideal for automotive, machinery, and structural uses, these nuts are engineered to meet stringent industry standards, offering excellent corrosion resistance and long-term performance. Whether you need standard or custom specifications, our domed cap nuts deliver superior functionality and aesthetic appeal, making them a top choice for professionals seeking efficient and safe fastening solutions.


The domed cap nut is meticulously crafted to meet the diverse needs of modern engineering and manufacturing sectors. Key product parameters highlight its precision and versatility. Below is a detailed overview of specifications available in various models. Standard features include hex drive compatibility and a smooth, polished finish, but customizations are available upon request to suit specific project requirements. Our manufacturing process utilizes high-grade materials and advanced techniques to ensure each domed cap nut exceeds expectations in terms of strength and durability. Regular quality checks guarantee consistency across all batches, providing peace of mind for critical applications. By integrating user feedback, we continuously refine the domed cap nut design to enhance usability and performance in real-world scenarios.

  • Material: Stainless Steel, Carbon Steel, or Brass
  • Finish Options: Zinc Plated, Chrome, or Black Oxide
  • Thread Size Range: #4 to 1/2 inch
  • Drive Type: Hex (Standard)
  • Temperature Resistance: Up to 500°F (260°C)
  • Corrosion Resistance: High (varies by material and coating)
Model Thread Size Material Finish Torque Capacity (lb-in)
DCN-101 1/4"-20 Stainless Steel Zinc Plated 120
DCN-102 5/16"-18 Carbon Steel Chrome 180
DCN-103 3/8"-16 Brass Black Oxide 150
DCN-104 7/16"-14 Stainless Steel Zinc Plated 200
DCN-105 1/2"-13 Carbon Steel Chrome 250

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