Hex Nuts

Grade One Fasteners is a trusted Hex Nuts Manufacturer in India, supplying precision-engineered industrial hex nuts for construction, machinery, automotive, infrastructure, oil and gas, power generation, metal fabrication and engineering applications. Hex Nuts are among the most widely used industrial fastening components. Their six-sided external shape allows tightening with standard tools, while the internal thread enables them to be used with compatible bolts, studs, threaded rods and other externally threaded fasteners. We supply Hex Nuts in different sizes, materials, thread configurations, property classes and surface finishes according to customer requirements, applicable standards and project specifications. What Are Hex Nuts? A Hex Nut is an internally threaded fastener with six external sides. It is designed to mate with a compatible bolt, stud or threaded rod to create a mechanical joint. When tightened correctly, the nut and mating fastener create clamping force that holds components together. The six-sided shape provides convenient wrench engagement during installation and removal. Hex Nuts are commonly referred to as: Standard metric Hex Nuts are commonly specified to standards such as ISO 4032 and DIN 934, while inch-series Hex Nuts may follow ASME B18.2.2, depending on the required application and specification. Why Are Hex Nuts Widely Used? Simple and Reliable Fastening Hex Nuts provide a straightforward fastening solution when used with compatible bolts and threaded components. Wide Size Availability Hex Nuts are available in metric and inch sizes for different industrial applications. Multiple Material Options Different materials can be selected depending on strength, corrosion resistance, temperature and environmental requirements. Easy Installation The six-sided design allows installation using common spanners, wrenches and industrial tightening equipment. Suitable for Multiple Industries Hex Nuts are used across machinery, construction, automotive, infrastructure, manufacturing and heavy engineering sectors. Types of Hex Nuts Standard Hex Nuts Standard Hex Nuts are general-purpose six-sided internally threaded nuts used with bolts, studs and threaded rods. Heavy Hex Nuts Heavy Hex Nuts have larger external dimensions than standard Hex Nuts and are commonly selected for heavy-duty and specialised applications. Fine Thread Hex Nuts Fine Thread Hex Nuts are supplied where the application requires a fine-pitch thread configuration. Stainless Steel Hex Nuts Stainless Steel Hex Nuts are suitable for applications requiring corrosion resistance. Carbon Steel Hex Nuts Carbon Steel Hex Nuts are widely used in general engineering and industrial applications. Alloy Steel Hex Nuts Alloy Steel Hex Nuts can be selected for applications requiring specific mechanical properties. High-Strength Hex Nuts High-strength Hex Nuts are manufactured or selected according to the required material grade, property class and applicable standard. Hex Nuts Specifications Specification Available Options Product Hex Nuts Alternative Names Hexagon Nuts, Standard Hex Nuts, Finished Hex Nuts Design Six-Sided Externally Threaded Fastener Thread Type Metric Coarse, Metric Fine, UNC, UNF and Custom Threads Material Carbon Steel, Mild Steel, Alloy Steel, Stainless Steel and Special Materials Sizes Standard and Custom Sizes Standards ISO 4032, DIN 934, ASME B18.2.2 and Customer Specifications Surface Finish Self Finish, Zinc Plated, Hot Dip Galvanized, Black Oxide and Special Coatings Application Construction, Machinery, Automotive, Engineering and Industrial Equipment ISO 4032 and DIN 934 are widely referenced for standard metric Hex Nuts, while ASME B18.2.2 covers commonly used inch-series Hex Nut dimensions. Hex Nuts Materials Stainless Steel Hex Nuts Stainless Steel Hex Nuts are commonly selected for applications where corrosion resistance is important. Suitable applications may include: Common stainless steel grades may include 304 and 316, depending on project requirements. Carbon Steel Hex Nuts Carbon Steel Hex Nuts are widely used in machinery, construction and general engineering applications. Different grades and coatings can be selected based on the required mechanical and environmental performance. Mild Steel Hex Nuts Mild Steel Hex Nuts can be used for general fabrication and industrial fastening applications where the required mechanical properties are appropriate. Alloy Steel Hex Nuts Alloy Steel Hex Nuts can be supplied for applications requiring higher mechanical performance or project-specific material specifications. Special Material Hex Nuts For demanding industrial applications, Hex Nuts may also be manufactured from specialised materials selected for corrosion resistance, high-temperature service or chemical resistance. Hex Nuts Size Range Thread Size Thread System Typical Application M4 Metric Light Industrial Assemblies M5 Metric Equipment and Components M6 Metric Machinery and Engineering M8 Metric Automotive and Equipment M10 Metric Industrial Applications M12 Metric Construction and Machinery M16 Metric Heavy Industrial Applications M20 Metric Engineering and Infrastructure M24 and Above Metric Heavy-Duty Applications Inch Sizes UNC / UNF Export and Special Applications The exact dimensions should always be selected according to the applicable standard, drawing and project specification. Manufacturers commonly offer Hex Nuts across both metric and inch ranges, with ISO/DIN and ASME standards depending on the thread system. Hex Nuts Standards Hex Nuts can be manufactured according to different international standards depending on the application. Common standards include: The correct standard should be confirmed before placing an order because dimensional and material requirements vary depending on the application. Hex Nuts Applications Construction Industry Hex Nuts are used in construction assemblies, fabricated structures, equipment and mechanical connections. Machinery and Equipment Industrial machinery uses Hex Nuts with bolts, studs and threaded rods for assembling components. Automotive Industry Hex Nuts are used across vehicle components, machinery and automotive equipment. Oil and Gas Industry Oil and gas applications may require specific materials, grades, standards and documentation depending on the project. Infrastructure Projects Infrastructure applications can require Hex Nuts for equipment installation, fabricated steelwork and mechanical assemblies. Power Generation Industrial equipment used in power generation may require specialised fasteners selected according to operating conditions. Steel and Metal Industry Hex Nuts are widely used in fabricated steel assemblies, machinery and industrial equipment. Engineering Industry Engineering applications use Hex Nuts for assembling mechanical systems and fastening threaded components. Hex Nuts Manufacturing Process Raw Material Selection Suitable raw material is selected according to the required material specification and mechanical requirements. Forming or Machining Depending on the product size, material and manufacturing requirement, Hex Nuts may be produced through: Threading The internal thread is manufactured according to the specified metric, UNC, UNF or other required thread system.