Majid Fasteners, a well-respected manufacturer and supplier located in Dubai, UAE, specializes in top-notch Heavy Hex Nuts that are perfect for high-strength and demanding industrial applications. Crafted with precision and in line with international standards, these nuts boast a larger and thicker hex profile, ensuring excellent load distribution, enhanced torque strength, and remarkable durability. Majid Fasteners offers heavy hex nuts in a variety of materials, including carbon steel, alloy steel, stainless steel, and high-tensile grades, catering to a wide range of industry needs. Their heavy hex nuts are a go-to choice in sectors like construction, petrochemical, oil and gas, power generation, and mechanical engineering, providing reliable and long-lasting fastening solutions.
Heavy Hex Nuts are usually made from materials like carbon steel, alloy steel, and stainless steel (304/316), along with high-tensile grades such as ASTM A194 2H or B7. Depending on the specific grade, their makeup can include elements like carbon, manganese, chromium, nickel, silicon, and molybdenum. These nuts are known for their impressive proof load strength, excellent hardness, outstanding fatigue resistance, and dependable thread engagement. Their wider and thicker design enhances torque-handling capabilities, making them ideal for high-pressure and heavy-load situations. The stainless steel versions are particularly good at resisting corrosion in tough environments.
| Nominal Size or Basic Major Thread Diameter | F | G | H | ||||||
| Width Across Flats | Width Across Corners | Thickness | |||||||
| Basic | Max | Min | Max | Min | Basic | Max | Min | ||
| 1/4 | .2500 | 1/2 | .500 | .488 | .577 | .556 | 15/64 | .250 | .218 |
| 5/16 | .3125 | 9/16 | .562 | .546 | .650 | .622 | 19/64 | .314 | .280 |
| 3/8 | .3750 | 11/16 | .688 | .669 | .794 | .763 | 23/64 | .377 | .341 |
| 7/16 | .4375 | 3/4 | .750 | .728 | .866 | .830 | 27/64 | .441 | .403 |
| 1/2 | .5000 | 7/8 | .875 | .850 | 1.010 | .969 | 31/64 | .504 | .464 |
| 9/16 | .5625 | 15/16 | .938 | .909 | 1.083 | 1.037 | 35/64 | .568 | .526 |
| 5/8 | .6250 | 1-1/16 | 1.062 | 1.031 | 1.227 | 1.175 | 39/64 | .631 | .587 |
| 3/4 | .7500 | 1-1/4 | 1.250 | 1.212 | 1.443 | 1.382 | 47/64 | .758 | .710 |
| 7/8 | .8750 | 1-7/16 | 1.438 | 1.394 | 1.660 | 1.589 | 55/64 | .885 | .833 |
| 1 | 1.0000 | 1-5/8 | 1.325 | 1.575 | 1.876 | 1.796 | 63/64 | 1.012 | .956 |
| 1-1/8 | 1.1250 | 1-13/16 | 1.812 | 1.756 | 2.093 | 2.002 | 1-7/64 | 1.139 | 1.079 |
| 1-1/4 | 1.2500 | 2 | 2.000 | 1.938 | 2.309 | 2.209 | 1-7/32 | 1.251 | 1.187 |
| 1-3/8 | 1.3750 | 2-3/16 | 2.188 | 2.119 | 2.526 | 2.416 | 1-11/32 | 1.378 | 1.310 |
| 1-1/2 | 1.5000 | 2-3/8 | 2.375 | 2.300 | 2.742 | 2.622 | 1-15/32 | 1.505 | 1.433 |
| 1-5/8 | 1.6250 | 2-9/16 | 2.562 | 2.481 | 2.959 | 2.828 | 1-19/32 | 1.632 | 1.556 |
| 1-3/4 | 1.7500 | 2-3/4 | 2.750 | 2.662 | 3.175 | 3.035 | 1-23/32 | 1.759 | 1.679 |
| 2 | 2.0000 | 3-1/8 | 3.125 | 3.025 | 3.608 | 3.449 | 1-31/32 | 2.013 | 1.925 |
Heavy Hex Nuts find their place in various industries that demand strong, vibration-resistant, and secure fastening solutions. You’ll often see them in structural steel assemblies, heavy machinery, bridges, pipelines, and construction frameworks. In the oil and gas industry, they play a crucial role in flanges, valves, pressure vessels, and equipment that operates at high temperatures. Power plants, petrochemical facilities, and refineries depend on heavy hex nuts for vital bolting connections that face high stress and extreme conditions. They’re also utilized in wind towers, mining equipment, automotive systems, and industrial machinery where robust load-bearing and long-lasting fastening performance are essential.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.