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Puri Fasteners is a trusted manufacturer and supplier in Chennai, offering high-quality ASTM A193 B7 Nuts designed for superior strength and reliability in industrial applications. These nuts are precision-engineered to meet international standards, ensuring consistent performance under high pressure and extreme conditions. Known for their durability, corrosion resistance, and mechanical stability, ASTM A193 B7 Nuts from Puri Fasteners are ideal for critical assemblies in construction, petrochemicals, power plants, and heavy machinery. With a strong commitment to quality, timely delivery, and customer satisfaction, Puri Fasteners provides dependable fastening solutions that professionals can rely on for safety and performance.
ASTM A193 B7 Nuts are made from high-strength alloy steel, primarily containing carbon, manganese, chromium, and molybdenum. This composition provides excellent tensile and yield strength, allowing the nuts to withstand heavy loads and high-stress environments. They are often heat-treated to enhance hardness, toughness, and durability. ASTM A193 B7 Nuts also offer good corrosion resistance and maintain structural integrity under elevated temperatures and repeated stress. Their precise threading ensures a secure fit with bolts, making them reliable for industrial applications that demand high-performance fastening solutions.
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 industries where strong and secure fastening is essential. They are commonly employed in pressure vessels, pipelines, construction projects, and heavy machinery assemblies. These nuts are ideal for high-temperature and high-pressure environments, such as power generation plants, petrochemical refineries, and industrial equipment installations. They are also used in bolted flange connections, structural frameworks, and mechanical systems that require robust and reliable fasteners. With their high strength, corrosion resistance, and durability, ASTM A193 B7 Nuts provide dependable performance, ensuring safety, stability, and long-lasting operation in critical industrial applications.
Puri Fasteners ensures the secure packaging of ASTM A193 B7 Nuts for optimal protection and easy handling. Each nut is individually packed to prevent damage during transit and storage, with clear labeling for quick identification. Our packaging is designed to maintain the integrity of the nuts and facilitate efficient inventory management. Trust Puri Fasteners for meticulously packaged components, ensuring that your ASTM A193 B7 Nuts arrive in perfect condition, ready for reliable performance in your projects.
Puri Fasteners is a leading manufacturer and supplier of high-quality fasteners in Chennai, India, with over 8 years of experience serving global industries.
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