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Mira Fasteners is a reliable manufacturer and supplier of ASTM A193 B7 Stud Bolts, proudly based in Kuala Lumpur, Malaysia. These robust alloy steel stud bolts are crafted for critical applications in sectors like oil & gas, petrochemical, power generation, and heavy construction. At Mira Fasteners, every stud bolt is made to meet international standards and goes through strict quality control to ensure top-notch mechanical performance and precise dimensions. With a strong focus on reliability and prompt delivery, Mira Fasteners has become a go-to source for industrial fasteners throughout Malaysia and Southeast Asia.
The ASTM A193 B7 Stud Bolts are made from chromium-molybdenum alloy steel and are heat-treated to achieve impressive mechanical properties. Typically, these bolts boast a minimum tensile strength of 860 MPa and a yield strength of 720 MPa, making them perfect for high-pressure and high-temperature settings. They offer solid resistance to heat and moderate corrosion, especially when paired with suitable coatings like zinc plating, PTFE, or hot-dip galvanizing. Fully threaded and designed to work with nuts on both ends, these stud bolts guarantee strong, stable bolted joints even in tough conditions.
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.
You’ll find ASTM A193 B7 Stud Bolts commonly used in flanged connections, pressure vessels, valves, boilers, and pipeline systems. Their outstanding strength and durability make them ideal for handling both static and dynamic loads in challenging operating environments. These bolts are often used alongside ASTM A194 Grade 2H or Grade 7 nuts to form a dependable bolting assembly. Available in a variety of sizes, threads, and finishes, B7 stud bolts from Mira Fasteners promise long-lasting performance and structural integrity in essential industrial applications.
At Mira Fasteners, we prioritize the safe and secure packaging of our ASTM A193 B7 stud bolts. Each bolt is meticulously packed to prevent damage during transit. We use sturdy, corrosion-resistant materials and ensure proper labeling for easy identification. Our packaging solutions include durable wooden crates, pallets, and customized options to meet specific client needs. By adhering to international packaging standards, we guarantee that our stud bolts arrive in perfect condition, ready for immediate use.
Mira Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kuala lumpur, Malaysia, with over 8 years of experience serving global industries.
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