Weston Stainless, based in Midland, UK, is a leading supplier of high-quality stainless steel products, providing durable and precision-engineered solutions for various industries. The company is known for its commitment to excellence, offering materials that meet international standards. Stainless Steel 310H Nuts, made from Grade 310H stainless steel, are designed for high-temperature and corrosion-resistant applications. Available in various shapes, including hex nuts, heavy hex nuts, and coupling nuts, they contain high chromium and nickel content, ensuring excellent oxidation resistance. These nuts are widely used in petrochemical plants, power generation, heat exchangers, and furnace applications.
Stainless Steel 310H Nuts are composed of approximately 24-26% Chromium, 19-22% Nickel, 2% Manganese, 0.04-0.10% Carbon, 1.50% Silicon, 0.045% Phosphorus, and 0.03% Sulfur, ensuring excellent high-temperature strength and oxidation resistance. Their mechanical properties include a tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 40%, providing durability and reliability. With a density of 7.9 g/cm³, a melting point of 1400-1450°C, and thermal conductivity of 14.2 W/m·K, these nuts are ideal for fastening applications in high-temperature environments, including power plants, petrochemical industries, and furnace components.
| Specifications | DIN, ISO ,JIS ,GB, IS, BS, ASTM |
| Standard | ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 |
| Size | M0.2 to M33 | 3/6″ to 2″ | Custom Sizes |
| Length | 3 mm to 200 mm | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 310H | 0.10 max | 2.00 max | 1.00 max | 0.045 max | 0.030 max | 24.0 – 26.0 | – | 19.0 – 21.0 | – |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Rockwell B (HR B) max | Hardness Brinell (HB) max |
| 310H | 515 | 205 | 40 | 217 | 92 |
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A corrosion-resistant product, Stainless Steel 310H nuts are available in sizes from M6 to M64. They offer excellent heat and oxidation resistance, making them ideal for high-temperature applications in industrial furnaces and chemical processing.
A corrosion-resistant product, Stainless Steel 310H coupling nuts, used to join two male threads, come in sizes from M6 to M36. Their high-temperature resistance and durability make them suitable for demanding industrial and aerospace applications.
A corrosion-resistant product, Stainless Steel 310H nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert prevents loosening under vibration, providing secure fastening in high-temperature environments.
A corrosion-resistant product, Stainless Steel 310H flange hex nuts feature an integrated flange and are available in sizes from M5 to M20. They distribute load evenly and offer stability in high-temperature and corrosive environments.
A corrosion-resistant product, Stainless Steel 310H heavy hex nuts come in sizes from M10 to M48. Their thicker design provides increased strength and heat resistance, ideal for heavy-duty and high-temperature applications.
A corrosion-resistant product, Stainless Steel 310H square nuts offer a larger surface area for contact and come in sizes from M6 to M30. They are suitable for high-temperature and heavy clamping applications where stability is essential.
Stainless Steel 310H Nuts are widely used in high-temperature and corrosion-resistant applications. They are essential in petrochemical plants, power generation facilities, and refineries, where they secure components exposed to extreme heat and aggressive environments. In the aerospace and automotive industries, they are used in exhaust systems and engine components due to their heat resistance. These nuts are also crucial in furnace construction, heat exchangers, and industrial boilers, providing strong and durable fastening. Their superior oxidation resistance makes them ideal for structural applications in thermal processing and chemical processing industries.
Stainless Steel 310H Nuts come with test certificates such as Mill Test Certificates (MTC), third-party inspection reports, and material traceability documents, ensuring compliance with international quality standards. They are securely packaged in wooden crates, cartons, or protective wrapping to prevent damage during transit. Delivery is efficient and reliable, catering to both domestic and global markets with safe shipping options, ensuring the nuts reach customers in perfect condition.







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