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The Fasteners Mart is a reliable manufacturer and supplier from Mumbai, India, with a reputation for providing superior fastening solutions. Being a specialist in ASTM A193 B8T Nuts, the company guarantees superior performance, corrosion resistance and durability for key industrial applications. With an emphasis on precision engineering and customer satisfaction, The Fasteners Mart caters to various sectors with dependable products that comply with international standards and suit domestic as well as global markets.
ASTM A193 B8T Nuts are made from AISI 321 stainless steel, titanium stabilized for increased intergranular corrosion resistance. They have a general composition of 17-19% chromium, 9-12% nickel and titanium ≥5%C%. The nuts have good mechanical properties, having a minimum tensile strength of 75 ksi and yield strength of 30 ksi. They also exhibit good elongation (minimum of 30%) and superior toughness over a broad range of temperatures, thus being suitable for corrosive and high-temperature conditions in many industrial processes.
Material | Specification | Standards | Size | Length |
ASTM A193 B8T Nuts | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
| 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% |
| 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 | |
| B8M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 |
| 7/8 – 1 | 100 | 80 | 20 | 45 | |
| 1-1/8 – 1-1/4 | 95 | 65 | 25 | 45 | |
| 1-3/8 – 1-1/2 | 90 | 50 | 30 | 45 |
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 B8T Nuts are used mostly in corrosive and high-temperature applications because of their better strength and intergranular corrosion resistance. The nuts are best suited for chemical, petrochemical, power generation, and marine industry applications. Typical applications involve bolting components together in heat exchangers, pressure vessels, boilers and piping. Fabricated from Type 321 stainless steel, B8T nuts provide superior performance in welded construction and are ideal for applications where long-term reliability and durability are crucial.
We offer detailed documentation for our ASTM A193 B8T nuts, such as 100% radiography test reports, raw material test reports, customer test reports, and heat treatment plans in detail. Our documentation package also includes packaging details, fumigation certificates, marketing invoices, quality assurance protocols, and raw material traceability. We also provide Manufacturer Test Certificates (MTC) based on EN 10204/3.1B standards. Every nut is produced to conform to exact customer specifications, packaged according to industry standards and completely compliant with all necessary quality and documentation regulations.
The Fasteners Mart is a leading manufacturer and supplier of high-quality fasteners in Mumbai, India, with over 8 years of experience serving global industries.
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