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Ramu Fasteners stands out as a top-notch manufacturer and supplier of Stainless Steel 321 / 321H Nuts, proudly based in Hyderabad, India. The company is all about crafting high-quality fastening solutions that are built to withstand corrosion, offer strength, and ensure reliability in high-temperature and tough industrial settings. With cutting-edge manufacturing facilities, precise machining, and rigorous quality control measures, Ramu Fasteners guarantees consistent accuracy and dependable performance. Their Stainless Steel 321 / 321H Nuts are specifically designed to provide secure fastening, resist intergranular corrosion, and maintain their mechanical integrity even under thermal and chemical stress. Catering to a variety of industries, the company delivers durable, high-performance fastening solutions.
These Stainless Steel 321 / 321H Nuts are made from titanium-stabilized austenitic stainless steel, which includes chromium and nickel. The addition of titanium helps prevent intergranular corrosion, particularly after welding, while the grade 321H, with its higher carbon content, enhances creep and tensile strength at elevated temperatures. These nuts boast impressive tensile strength, toughness, and resistance to oxidation and thermal stress. Stainless Steel 321 / 321H maintains its dimensional stability and mechanical integrity even in challenging conditions, making it perfect for critical fastening applications where durability and reliability are a must.
| Specifications | IS, BS, ASTM |
| Standard | ASTM / ASME – A/ SA 193 |
| Length | 3 mm to 200 mm |
| Size | M02 to M33 |
| Type | Hex Nuts, Dome Nuts, Hex Machine Screw Nuts, Hex Lock Nuts Nylon Insert, Hex Jam Nuts, Hex Jam Nylon Lock Nuts, Heavy Hex Nuts, Wing Nuts, Cap Nuts, Acorn Nuts, Square Nuts, K-Lock Nuts, Prevailing Torque Lock Nuts, Top Lock Nuts, Two-Way Reversible Lock Nuts, Pin-Lock Nuts, T-Nuts, Coupling Nuts, T-Slot Nuts, Castle Nuts, Flange Nuts Serrated, Machine Hex Nuts, Finished Hex Nuts, Forged Eye Nut, Rivet Nuts, Slotted Hex Nut, Acme Hex Nuts, Nylock Nuts, Anco Locknuts, Flexloc Nuts, Reversible Locknuts, Panel Nut, Poly Nut, Conelock Nut, Self Clinching Nuts, Domed Cap Nuts, Imperial Thread Nuts, Imperial Thread Nylock Nuts, Sleeve Nuts, Thin Nuts, Weld Nuts, High Tensile Nuts, Cage Nuts, Security Nuts, Imperial Nuts, Industrial Nuts, Miscellaneous Nuts, Insert Nuts, Knurled Nuts, Round Nuts |
| Element | SS 321 |
| Ni | 9.0 – 12.0 |
| C | 0.08 |
| Mn | 2.0 max |
| P | 0.045 max |
| S | 0.030 max |
| Si | 0.75 max |
| Cr | 17.0 – 19.0 |
| Mo | – |
| N | 0.10 |
| Element | SS 321 |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 217 |
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.
You’ll find Stainless Steel 321 / 321H Nuts widely used in industries that demand high-temperature 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 nuts are particularly suited for bolted assemblies that face prolonged thermal cycling, mechanical stress, and harsh chemical environments. With their long service life, reduced maintenance needs, and reliable performance, Stainless Steel 321 / 321H Nuts are essential for critical industrial applications.
At Ramu Fasteners, we take great care in installing our Stainless Steel 321/321H nuts to ensure they arrive in pristine condition. Each nut is carefully inspected and individually wrapped with protective material to prevent corrosion. They are then placed in tightly labeled boxes with detailed product details and quantities. Our packaging is designed to protect the environment and physical effects, ensuring that your high-performance fruit is delivered safely 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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