Large Hex Nuts

Large Hex Nuts

large-nuts

Product Dimensions

ParameterSpecification
Product TypeLarge Hex Nut
Size RangeM20 – M100 (custom sizes available)
Material OptionsCarbon Steel, Alloy Steel, Stainless Steel
StandardsASTM A563, ASTM A194, ISO, DIN, BS
Surface FinishZinc Plated, Hot-dip Galvanized, Phosphate Coated, Black Oxide

Industrial Applications

Large Hex Nuts are widely used in:

  • Electrical panels and assemblies: Provide robust fastening for heavy frameworks and enclosures.
  • Automotive and heavy vehicles: Applied in trucks, trailers, and railways for secure high-load connections.
  • Construction and steel structures: Commonly used with heavy hex bolts for structural joints and frameworks.
  • Oil, gas, and petrochemical industries: Suitable for fastening flanges, pipelines, and high-pressure systems.
  • Power plants and heavy machinery: Used in turbines, boilers, and high-tensile assemblies exposed to vibration and load.

Product Description

Large Hex Nuts are bigger in size than standard and heavy hex nuts, providing additional strength and torque-bearing capacity. Engineered for high-strength applications, they are typically used with high-tensile bolts and studs to handle structural stresses and dynamic loads. Their enlarged dimensions ensure a firm grip and improved clamping efficiency in critical assemblies. Available in a wide range of grades, coatings, and custom sizes, large hex nuts are essential in heavy-duty construction, industrial, and infrastructural projects.

Product specifications

  • Nut Type: Oversized hexagonal nut with increased load-bearing surface
  • Size Range: Metric M20 – M100; inch sizes also available (up to 4”)
  • Thread Type: ISO metric coarse/fine, UNC/UNF; custom threading on request
  • Material Options: Carbon steel, mild steel, alloy steel, stainless steel (A2/A4 grades)
  • Surface Finish: Zinc plating, hot-dip galvanization, phosphate coating, black oxide, plain finish
  • Strength Class: ASTM A563 Grades C, DH, ASTM A194 Grades 2H, 7, 8, 8M; Property classes 8, 10, 12
  • Tensile Strength: Up to 1,200 MPa depending on grade and material
  • Hardness: Typically Rockwell C22–C38 for alloy steels
  • Dimensions: Larger across-flats and thickness than standard or heavy hex nuts
  • Operating Temperature: -50°C to +500°C material dependent
  • Corrosion Resistance: Enhanced when stainless steel or galvanized coating is applied
  • Applications: Steel frameworks, pipelines, power plants, heavy construction, oil and gas industries
  • Standards/Compliance: ASTM A563, ASTM A194, DIN 934 heavy series, ISO, BS standards
  • RoHS/REACH Compliance: Available for stainless steel and environmentally safe coatings

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