Ranya Stainless is a reputable manufacturer and supplier of top-notch Stainless Steel 309S Nuts based in Muscat, Oman. They offer durable and dependable fastening solutions tailored for high-temperature and industrial applications. The company specializes in precision-engineered 309S nuts that adhere to international standards, guaranteeing outstanding strength, corrosion resistance, and long-lasting performance. These nuts find extensive use in industries like chemical, petrochemical, power generation, furnace, and heat treatment, where secure and reliable fastening is crucial. Ranya Stainless is committed to ensuring that each 309S nut provides operational reliability and efficiency, making them a go-to choice for critical industrial systems in Oman and throughout the Middle East.
Stainless Steel 309S Nuts are crafted from a high-alloy austenitic stainless steel that includes chromium and nickel, which gives them remarkable resistance to oxidation, scaling, and corrosion even at elevated temperatures. The low carbon content helps reduce carbide precipitation during welding, while the alloy’s composition ensures high tensile and yield strength, toughness, and mechanical durability in extreme conditions. These nuts are designed to withstand thermal fatigue and structural deformation, making them perfect for high-temperature industrial applications like furnaces, kilns, heat exchangers, and piping systems, where secure, long-lasting, and corrosion-resistant fastening is a must.
Element | Content (%) |
Iron, Fe | 60 |
Chromium, Cr | 23 |
Nickel, Ni | 14 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Carbon, C | 0.20 |
Phosphorous, P | 0.045 |
Sulfur, S | 0.030 |
Properties | Metric | Imperial |
Tensile strength | 620 MPa | 89900 psi |
Yield strength (@ strain 0.200%) | 310 MPa | 45000 psi |
Izod impact | 120 – 165 J | 88.5 – 122 ft-lb |
Shear modulus (typical for steel) | 77 GPa | 11200 ksi |
Elastic modulus | 200 GPa | 29008 ksi |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Elongation at break (in 50 mm) | 45% | 45% |
Hardness, Brinell | 147 | 147 |
Hardness, Rockwell B | 85 | 85 |
Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
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Corrosion-resistant product designed for high-temperature environments. Stainless Steel 309S Nuts are available in sizes from M6 to M36, ideal for furnace components and industrial applications requiring excellent heat and oxidation resistance.
Stainless Steel 309S Coupling Nuts are used to connect threaded rods in high-temperature settings. Sizes range from M6 to M36, suitable for furnace and kiln applications where durability and heat resistance are essential.
Stainless Steel 309S Nylon Insert Nuts feature a nylon insert to prevent loosening under high temperatures. Available in sizes from M6 to M24, they are ideal for securing components in industrial machinery and furnace applications.
Stainless Steel 309S Flange Hex Nuts offer enhanced load distribution with integrated flanges. Sizes range from M6 to M24, suitable for high-temperature environments such as kilns and industrial equipment, providing both strength and corrosion resistance.
Stainless Steel 309S Heavy Hex Nuts are designed for high-stress, high-temperature applications. Available in sizes from M6 to M36, they are ideal for use in industrial machinery and furnace components, ensuring exceptional strength and thermal stability.
Stainless Steel 309S Square Nuts provide a large surface area for effective torque application. Sizes range from M6 to M24, suitable for high-temperature and industrial applications, ensuring durability and stability in demanding environments.
We are providing a wide variety of certifications with our Stainless Steel 309S Nuts in order to satisfy a high quality standard. In our package, commercial invoices, packing lists, fumigation certificates, heat treatment charts, quality assurance plans, and approved laboratory test reports are provided. Besides, test certificate varying specifically for our Stainless Steel 309S Nuts. The set of certificates used by us consists of MTC as per EN 10204/3.1b, PMI Test Certificate, 100% radiography test report, and Third-Party Inspection Certificate. It will ensure full satisfaction and satisfaction for our customers and clients that these products carry complete certifications.
Stainless Steel 309S Nuts are commonly utilized in industries that demand high-strength, heat-resistant, and corrosion-resistant fasteners. They are particularly suited for high-temperature piping systems, boilers, furnaces, kilns, and heat exchangers found in chemical, petrochemical, and power generation plants. Moreover, 309S nuts are also employed in metallurgy, food processing, and manufacturing applications where secure, leak-proof, and durable fastening is essential.







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