China Hexagonal thick nuts Manufacturer, Supplier, Factory

Hexagonal thick nuts are a specialized type of Hexagon nut designed for applications requiring higher clamping force, greater load distribution, and enhanced durability. These heavy-duty fasteners are commonly used in construction, machinery, and automotive industries where standard hex nuts may not provide sufficient strength or thread engagement. The unique geometry of hexagonal thick nuts allows them to withstand greater torque and stress, making them ideal for critical connections in structural frameworks, heavy equipment, and industrial assemblies. Engineers and procurement professionals often specify these nuts when working with high-strength bolts or in environments subject to vibration, corrosion, or extreme temperatures. With their robust design and reliable performance, hexagonal thick nuts ensure long-term stability and safety in demanding applications. When selecting a Hexagon nut for heavy-duty use, the thick variant offers distinct advantages in terms of fatigue resistance and secure fastening.


Hexagonal thick nuts are manufactured to precise standards, ensuring consistent quality and performance across various applications. Key parameters of Hexagonal thick nuts include dimensions, material grades, and mechanical properties, which are critical for proper selection and installation. Below is a detailed overview of the specifications for Hexagonal thick nuts.

  • Thread Size: Available in metric (e.g., M6 to M48) and imperial (e.g., 1/4" to 2") standards to match bolt requirements.
  • Width Across Flats: Typically ranges from 10 mm to 75 mm, depending on the size, providing a secure grip for wrenches.
  • Height/Thickness: Generally 1.5 to 3 times the thickness of standard hex nuts, offering increased bearing surface.
  • Material: Common options include carbon steel (grades 5, 8, 10), stainless steel (304, 316), and alloy steel, with coatings like zinc plating or hot-dip galvanizing for corrosion resistance.
  • Strength Grade: Often classified under systems like ISO 898-2 or ASTM A563, with grades such as 8, 10, or 12 for high tensile applications.
  • Surface Finish: Options include plain, phosphated, or dichromate finishes to enhance durability and aesthetic appeal.
Parameter Typical Range Standards Applications
Thread Size M6 - M48 / 1/4" - 2" ISO 4032, ASME B18.2.2 General machinery, construction
Width Across Flats 10 mm - 75 mm DIN 934, ANSI B18.2.2 Automotive, structural steel
Height 8 mm - 40 mm ISO 4034, ASTM A563 Heavy equipment, bridges
Material Grade Grade 5 to 12 / A2 to A4 ISO 898-2, ASTM F594 Marine, chemical plants
Proof Load Up to 1200 MPa ISO 898-1, SAE J429 Aerospace, high-stress assemblies

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