Request For Our Latest Prices On SS 347H Bolts in Mumbai, India!
The Fasteners Mart, a reliable Mumbai-based manufacturer and supplier, is a specialist in high-quality fastening solutions such as Stainless Steel 347H Bolts. Durable and heat-resistant, these bolts are best suited for high-temperature applications across industries. With a firm focus on quality, precision and customer satisfaction, The Fasteners Mart provides dependable products that conform to international standards and provide superior performance in challenging environments.
Stainless Steel 347H bolts consist mainly of iron, chromium (17-20%), and nickel (9-13%), with columbium (niobium) added to provide greater stability and high-temperature strength. They have superior mechanical properties, such as a tensile strength of approximately 515 MPa, yield strength of 205 MPa, and elongation of 40%. These bolts provide superior intergranular corrosion resistance and have good performance in high-temperature conditions, thus making them suitable for heat exchangers, boilers, and pressure vessels in chemical and petrochemical plants.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347H | min. | 0.04 | – | – | – | – | 17.0 | 3.00 | 9.0 | – |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 19.0 | 4.00 | 13.0 | – | |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.96 g/cm3 | 1450 °C | 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 347H Bolts are extensively applied in corrosive and high-temperature conditions because of their superior thermal stability and resistance to intergranular corrosion. Typical uses include furnace parts, superheaters, boilers, and heat exchangers in petrochemical, power generation, and chemical processing industries. They are also applied in marine and aerospace industries where durability and strength under severe conditions are necessary. These bolts provide secure fastening in challenging applications and are the best fit for both structural and high-pressure equipment assemblies.
At The Fasteners Mart, we maintain the highest standards of quality for our stainless steel 347H bolts. This commitment is seen in every aspect—from accurate labeling and rugged packaging to complete documentation. Our trading invoices demonstrate this commitment, along with fumigation certificates, complete heat treatment records and strict quality control measures. We also offer MTCs, PMI test certificates and 100% radiography test certificates to guarantee unparalleled reliability. Every bolt is individually wrapped with protective coverings to avoid damage in transit, and it arrives in pristine condition ready to be used straight away in heavy-duty applications.
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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