Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality stainless steel products. Among their specialized offerings are Stainless Steel 440B Nuts, designed for applications requiring excellent hardness, wear resistance, and corrosion protection. These nuts are ideal for industrial, mechanical, and precision assemblies that demand durability and reliability. At Walid Stainless, every nut is manufactured with precision and undergoes rigorous quality control to ensure consistent performance. Clients rely on 440B Nuts for secure, long-lasting fastening solutions, making them a dependable choice for demanding industrial, mechanical, and high-performance projects.
Stainless Steel 440B Nuts are made from a high-carbon martensitic stainless steel alloy containing approximately 16–18% chromium. This composition provides excellent hardness, wear resistance, and moderate corrosion resistance. The alloy is heat-treatable, typically achieving tensile strength of 750–900 MPa and hardness up to 58 HRC. The martensitic structure ensures dimensional stability, mechanical durability, and resistance to wear under high stress. 440B Nuts are suitable for industrial, automotive, and precision mechanical fastening applications requiring high strength, hardness, and reliable long-term performance.
C | Si | Mn | P | S | N | Cr | Cu | Mo | Ni | Ti | V |
|---|---|---|---|---|---|---|---|---|---|---|---|
0.75 – 0.95 | – | – | – | – | – | 16.00 – 18.00 | – | 0.90 – 1.30 | – | – | 0.07 – 0.12 |
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength 0.2% Proof (MPa) | Elongation (% in 50mm) | Hardness Rockwell (HR C) | Impact Charpy V (J) |
|---|---|---|---|---|---|
| Annealed* | 758 | 448 | 14 | 269HB max | – |
| 204 | 2030 | 1900 | 4 | 59 | 9 |
| 260 | 1960 | 1830 | 4 | 57 | 9 |
| 316 | 1860 | 1740 | 4 | 56 | 9 |
| 371 | 1790 | 1660 | 4 | 56 | 9 |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.74 g/cm3 | 0.280 lb/in³ |
| Melting point | 1482°C | 2700°F |
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A corrosion-resistant product, Stainless Steel 440B nuts are available in sizes from M6 to M64. Known for their high strength and hardness, they are ideal for heavy-duty applications in industrial machinery and automotive components.
A corrosion-resistant product, Stainless Steel 440B coupling nuts, used to join two male threads, come in sizes from M6 to M36. They provide exceptional strength and durability, making them suitable for high-stress and heavy-duty applications.
A corrosion-resistant product, Stainless Steel 440B nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert prevents loosening under vibration, offering secure fastening in high-strength and demanding environments.
A corrosion-resistant product, Stainless Steel 440B flange hex nuts feature an integrated flange and come in sizes from M5 to M20. They provide enhanced load distribution and stability, suitable for high-stress and high-temperature applications.
A corrosion-resistant product, Stainless Steel 440B heavy hex nuts are available in sizes from M10 to M48. Their increased thickness and strength make them ideal for heavy-duty applications and high-stress environments requiring robust and secure fastening.
A corrosion-resistant product, Stainless Steel 440B square nuts offer a larger contact surface and come in sizes from M6 to M30. They are ideal for high-strength applications requiring reliable performance in heavy clamping and industrial settings.
Walid Stainless ensures high-quality materials with a string of tests for excellence. Stainless Steel 440B Nut goes through proper checks such as hardness testing, spectrochemical analysis, PMI testing, tensile testing, micro and macro structural tests, pitting resistance, and IGC testing. We assure high performance through these strict checks. Supporting our commitment to quality, we provide documentation, such as commercial invoices, packing lists, labels, Certificates of Origin, and Third-Party Inspection Certificates, for customer satisfaction on pricing, delivery, and reliability of the products.
Stainless Steel 440B Nuts are widely used in industries requiring high-strength, wear-resistant, and corrosion-protected fastening solutions. They are ideal for precision machinery, automotive components, pumps, valves, and industrial assemblies exposed to mechanical stress and moderate corrosive conditions. Their heat-treatable martensitic composition ensures long-term mechanical strength, dimensional stability, and wear resistance. Engineers and technicians rely on 440B Nuts for safe, secure, and consistent fastening performance in demanding industrial and mechanical applications. Walid Stainless ensures that each nut meets strict quality standards, providing dependable materials for high-performance, precision, and industrial projects.
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