Large Hex Nuts

Product Dimensions

Parameter	Specification
Product Type	Large Hex Nut
Size Range	M20 – M100 (custom sizes available)
Material Options	Carbon Steel, Alloy Steel, Stainless Steel
Standards	ASTM A563, ASTM A194, ISO, DIN, BS
Surface Finish	Zinc Plated, Hot-dip Galvanized, Phosphate Coated, Black Oxide

Industrial Applications

Electrical Panels and Assemblies: As a trusted industrial hex nuts supplier, we deliver dependable, robust fastening solutions built to secure heavy frameworks and enclosures with confidence.
Automotive Heavy Vehicles: From trucks and trailers to railways, our high load capacity hex nuts provide secure, reliable connections that hold firm even under the most extreme stress.
Construction and Steel Structures: Our stainless steel hex nuts are designed in conjunction with the heavy hex bolts to provide long lasting performance in structural joints and frameworks in harsh environments.
Oil, Gas, and Petrochemical Industries: Precision Large Hex Nuts provide superior accuracy and reliability in difficult applications such as flanges, pipelines, and high pressure systems.
Power Plants and Heavy Machinery: Our robust fastening hex nuts keep turbines, boilers, and high-tensile assemblies performing consistently under continuous vibration and heavy load.

Product Description

Large hex nuts are purposely designed to go beyond what regular hex nuts and heavy hex nuts can offer. It gives more strength and can take more torque when you need it. Designed to withstand rigorous structural stresses and dynamic loads, no matter if you’re working with high-tensile bolts or heavy-duty studs, they are designed for handling it without missing a beat.

Their enlarged dimensions are not just about size — they translate into a firmer grip and improved clamping efficiency that gives you real confidence in critical assemblies. Available across a wide range of grades, coatings, and custom sizes, they are the go-to choice for professionals tackling heavy-duty construction, industrial, and infrastructural projects where performance cannot be compromised.

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