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Ramu Fasteners is a reputable manufacturer and supplier of Stainless Steel 321 / 321H Bolts, proudly based in Hyderabad, India. The company focuses on crafting top-notch fastening solutions that boast impressive strength, corrosion resistance, and reliable performance even at high temperatures. With state-of-the-art manufacturing facilities, precision machining, and rigorous quality control measures, Ramu Fasteners guarantees that every product meets high standards. Their Stainless Steel 321 / 321H Bolts are specifically designed to thrive in challenging thermal and chemical environments. Catering to a diverse array of industries across India, the company is dedicated to quality, durability, and ensuring customer satisfaction.
These Stainless Steel 321 / 321H Bolts are made from titanium-stabilized austenitic stainless steel, which includes chromium and nickel. The addition of titanium enhances resistance to intergranular corrosion, particularly after welding. The Grade 321H variant features a higher carbon content, which boosts creep and tensile strength at elevated temperatures. These bolts are known for their toughness, excellent oxidation resistance, and stable mechanical properties under thermal stress, making them perfect for high-temperature and pressure applications.
| 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, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347 | min. | – | – | – | – | – | 17.0 | 2.00 | 9.0 | – |
| max. | 0.08 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 3.00 | 13.0 | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347 | 515 | 205 | 40 | 95 | 201 |
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 Bolts find extensive use in industries that demand heat-resistant and corrosion-resistant fastening solutions. Common applications include chemical processing plants, petrochemical refineries, oil and gas equipment, power generation systems, heat exchangers, exhaust systems, and pressure vessels. These bolts are particularly well-suited for assemblies that are exposed to prolonged high temperatures and thermal cycling. With their long service life, low maintenance needs, and reliable performance, Stainless Steel 321 / 321H Bolts are vital for critical applications in the industrial and energy sectors.
At Ramu Fasteners we ensure the highest standards in packaging for our Stainless Steel 321/321H bolts. Each bolt is thoroughly inspected and protectively wrapped to prevent damage during transport. They are then placed in tightly labeled boxes with product details and detailed quantities. Our packaging products are designed to be environmentally and physically friendly, ensuring that your high-performance bolts arrive in optimal condition and ready for immediate use.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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