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The Fasteners Mart, established in Mumbai, India, is a reputable name in the fastener market, renowned for providing high-performance products to international customers in different industries. Among its best-selling products are Stainless Steel 321 / 321H Stud Bolts, which are made of titanium-stabilized austenitic stainless steel. These stud bolts, often in double-ended or fully threaded form, are made to withstand high temperatures and resist intergranular corrosion. Grade 321 has good weldability and corrosion resistance, and 321H has better high-temperature strength, making them suitable for heat-intensive industrial use.
Stainless Steel 321 / 321H Stud Bolts consist of chromium (17–19%), nickel (9–13%), titanium (5xC% minimum), and carbon (up to 0.08% in 321 and up to 0.10% in 321H). Manganese, silicon, phosphorus, and sulfur are other elements present. Tensile strength is between 515–750 MPa, yield strength is approximately 205 MPa, and hardness is up to 201 HB. They have a density of 7.93 g/cm³ and a melting range of 1398–1510°C, with outstanding mechanical performance in high-temperature and corrosive environments.
| Grade | Stainless Steel 321 |
| Specifications | ASTM A193 / ASME SA193, DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M 02 to M 160, Custom Sizes |
| Types | Threaded Rod, Class A double ended stud, Tie Rod, Double Ended Stud, Stud Bolts, Bronze Hex Studs, Threaded Studs etc |
| Element | Ni | C | Mn | P | S | Si | Cr |
| SS 321 | 9.00 – 12.00 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 321 | 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
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.
Stainless Steel 321 / 321H Stud Bolts find extensive applications in industries demanding high thermal and mechanical stability like petrochemical, aerospace, oil & gas, and power generation. They find perfect application in boilers, heat exchangers, exhaust systems, and pressure vessels. Grade 321 finds excellent application where there is repeated cycling in temperature and welding, and 321H finds application in constant high-temperature service with high creep strength. They are a solid option for essential assemblies due to their corrosion resistance and strength.
The Fasteners Mart provides timely and safe delivery of Stainless Steel 321 / 321H Stud Bolts to local and worldwide customers. Bolts are thoroughly packed with dry packaging, bubble wrap, and heavy-duty crate or carton to avoid any damage during transport. All packs are properly marked and quality-inspected for accurate and safe dispatch.
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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