China Heavy duty square nuts Manufacturer, Supplier, Factory

When it comes to robust and reliable fastening solutions, heavy duty square nuts stand out as a top choice for industrial and construction applications. These nuts are engineered to deliver exceptional strength and durability, making them ideal for heavy machinery, structural frameworks, and high-stress environments. Unlike standard nuts, heavy duty square nuts provide a larger bearing surface, which helps distribute load more evenly and reduces the risk of loosening under vibration. This design enhances safety and longevity in critical assemblies. For those seeking versatile and sturdy options, exploring our range of square nut products can offer tailored solutions to meet specific project demands. Additionally, heavy duty square nuts are often paired with bolts in demanding setups, ensuring a secure fit that withstands extreme conditions. Whether you're working on agricultural equipment, automotive systems, or infrastructure projects, incorporating high-quality square nut components can significantly improve performance and reduce maintenance needs. Their simple yet effective geometry allows for easy installation with common tools, saving time and labor costs while maintaining high standards.


Heavy duty square nuts are meticulously crafted from premium materials such as carbon steel, stainless steel, or alloy variants, depending on the application requirements. Key parameters include precise dimensions, thread specifications, and hardness ratings to ensure compatibility and reliability. Below is a detailed overview of the product specifications:

  • Materials: Available in carbon steel, stainless steel (e.g., Grade 304 or 316), and alloy steel.
  • Finishes: Options include zinc plating, hot-dip galvanizing, or black oxide coating for corrosion resistance.
  • Thread Types: Compatible with UNC, UNF, metric, and other standard thread series.
  • Standards: Manufactured to meet ANSI, DIN, or ISO standards for quality assurance.
Size (Inches) Width Across Flats (mm) Thickness (mm) Thread Size Load Capacity (lbs)
1/4 11.0 6.0 1/4-20 1,200
3/8 14.0 8.0 3/8-16 2,500
1/2 21.0 10.0 1/2-13 4,000
5/8 24.0 12.0 5/8-11 6,500
3/4 32.0 15.0 3/4-10 9,000

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