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Hamad Fasteners, located in Riyadh, Saudi Arabia, has built a solid reputation as a top-notch manufacturer and supplier of high-quality fastening solutions tailored to meet the diverse needs of industries around the globe. Renowned for their commitment to quality, durability, and adherence to international standards, the company boasts an extensive range of products designed for critical applications. Among these, ASTM A193 B7 Nuts stand out for their exceptional mechanical strength, heat resistance, and impressive longevity. Crafted with precision and cutting-edge technology, these nuts guarantee reliable fastening performance even in high-pressure and high-temperature settings.
Made from quenched and tempered chromium-molybdenum alloy steel, ASTM A193 B7 Nuts deliver remarkable tensile strength of approximately 125 ksi (860 MPa) and yield strength of about 105 ksi (725 MPa), ensuring they are tough and durable. They maintain their hardness and stability even at elevated temperatures, resisting wear and deformation. With their robust mechanical properties and ability to withstand extreme stress, these nuts are perfect for demanding fastening needs in critical industrial operations.
Material | Specification | Standards | Size | Length |
ASTM A193 B7 Nuts | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 | |
| B8 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
| 7/8 – 1 | 115 | 80 | 15 | 35 | |
| 1-1/8 – 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 – 1-1/2 | 100 | 50 | 28 | 45 |
| Element | B7 | B8 | B8M |
| Carbon | 0.37 – 0.49% | 0.08% max | 0.08% max |
| Manganese | 0.65 – 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 – 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 – 1.20% | 18.0 – 20.0% | 16.0 – 18.0% |
| Nickel | 8.0 – 11.0% | 10.0 – 14.0% | |
| Molybdenum | 0.15 – 0.25% | 2.00 – 3.00% |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
ASTM A193 B7 Nuts are widely used in high-pressure and high-temperature applications, including petrochemical, oil and gas, and power generation industries. They are essential for securing critical components in equipment such as flanges, valves, and turbines. These nuts are ideal for use in environments requiring enhanced strength and resistance to extreme conditions. Their reliability makes them suitable for heavy-duty applications, ensuring safe and stable connections in demanding industrial settings.
You’ll find ASTM A193 B7 Nuts widely used across the oil and gas, petrochemical, power generation, and construction sectors. They are commonly found in boilers, heat exchangers, pressure vessels, turbines, flanges, and pipeline systems where strength and reliability are paramount. Their ability to perform under high stress and thermal conditions makes them ideal for refineries, offshore platforms, and chemical plants. Plus, they’re utilized in heavy machinery and structural assemblies, ensuring long-lasting performance, safety, and secure connections in even the toughest industrial environments.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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