Request For Our Latest Prices On ASTM A193 B6 Fasteners in Kolkata, India!
At Rinku Fasteners, we focus on delivering durable, high-performance fastening solutions tailored to demanding industrial needs. As a trusted manufacturer and supplier based in Kolkata, India, we offer precision-engineered ASTM A193 B6 Fasteners known for their excellent strength and reliability. Designed for high-temperature and high-pressure environments, these alloy steel fasteners are widely used across power generation, petrochemical, and heavy engineering sectors. Our team ensures every product meets strict quality standards, providing clients with consistent, long-lasting performance. With a customer-centric approach and deep technical expertise, we proudly support complex industrial applications across India and beyond.
ASTM A193 B6 Fasteners are manufactured using alloy steel containing chromium, carbon, manganese, and silicon, giving them enhanced strength and oxidation resistance. These fasteners are heat-treated to achieve superior mechanical properties, including high tensile and yield strength suitable for elevated-temperature service. Their composition provides good hardness, stable performance under thermal stress, and resistance to scaling. They maintain structural integrity in high-pressure systems and offer reliable ductility and long-term durability. This combination of strength, heat resistance, and toughness makes them well-suited for challenging industrial environments.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| B6 (AISI 410) | 0.08 – 0.15 | 1.00 max | 1.00 max | 0.040 max | 0.030 max | 11.5 – 13.5 | 0.20-0.35 | – | – |
| Bolt Grade | Diameter, in. | Tensile Strength, ksi | Yield Strength ksi | Elongation, % | Reduction, % | Hardness |
|---|---|---|---|---|---|---|
| B6 | up to 4, inclusive | 110 | 85 | 15 | 50 | Not Defined |
| Specifications | ASTM F593, F594, F1554 / ASME SF593, F594, F1554 |
| Standard | DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Length | 3 mm to 200 mm | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Packing | IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request |
| Surface Coating | Cadmium Coating Hot Dipped Galvanizing Coating Ptfe Coated Phosphate Coating Teflon Coating Xylon Coating Zinc Coating |
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 B6 Fasteners are widely used in environments requiring strength and stability at elevated temperatures. They are a preferred choice for boilers, steam lines, heat exchangers, and turbine housings in power generation plants. Petrochemical and refinery sectors rely on them for high-pressure piping systems and furnace components. Their oxidation resistance makes them suitable for equipment exposed to continuous heat cycles. These fasteners are also utilized in heavy machinery, industrial furnaces, and process plants where durability and reliability are critical. Across various sectors, they help ensure safe, leak-free, and efficient operation in rigorous service conditions.
We provide comprehensive documentation with our ASTM A193 B6 Fasteners to ensure transparency and quality control. This includes a commercial invoice, packing list, heat treatment chart, fumigation certificate, and quality assurance plan. Additionally, we offer a NABL-approved lab test report, MTC per EN 10204/3.1b, PMI Test Certificate, 100% radiography test report, and Third Party Inspection Certificate. Our extensive documentation underscores our commitment to excellence and client satisfaction.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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