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Aria Fasteners, located in Hamilton, New Zealand, is your go-to source for top-notch ASTM A193 B7 stud bolts. Crafted with strength, durability, and precision in mind, these stud bolts are designed to deliver reliable fastening solutions in high-pressure, high-temperature, and demanding industrial settings. At Aria Fasteners, we take pride in ensuring that each stud bolt meets rigorous quality standards, so you can count on them to maintain structural integrity, resist wear, and perform consistently even under heavy loads and vibrations. These stud bolts are perfect for critical assemblies where safety, performance, and long-lasting reliability are non-negotiable.
Made from high-strength alloy steel, ASTM A193 B7 stud bolts boast impressive tensile strength, toughness, and resistance to wear and fatigue. They’re built to handle extreme pressures and elevated temperatures, maintaining their mechanical stability even when faced with vibration, stress, and thermal cycling. With their precise threading and robust properties, these bolts guarantee secure fastening in the toughest environments.
Material | Specification | Standards | Size | Length |
ASTM A193 B7 Stud Bolt | 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 stud bolts are extensively used in industries requiring high strength and durability. They are crucial in petrochemical, oil, and gas sectors for securing pipelines, valves, and flanges in high-pressure and high-temperature environments. Power generation plants utilize these bolts for boilers and turbine assembly. They are also employed in construction for structural reinforcement and in chemical processing plants where corrosion resistance is essential. Their reliability and compliance with stringent standards make them indispensable for critical applications.
You’ll find these stud bolts widely used across the oil and gas industries, power generation, chemical processing plants, and high-pressure piping systems. They’re commonly employed in flange connections, pressure vessels, and other critical bolted assemblies where strength, durability, and reliability are paramount. When you choose ASTM A193 B7 stud bolts from Aria Fasteners, you’re opting for long-term performance, structural integrity, and reduced maintenance—making them the preferred choice for industries that demand dependable, high-quality fastening solutions.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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