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Lina Fasteners, located in Tunis, Tunisia, is a leading manufacturer and supplier of high-quality Stainless Steel 440C Nuts designed for demanding industrial applications. With a commitment to excellence, Lina Fasteners produces a wide range of durable, corrosion-resistant, and high-performance fasteners that meet international standards. Stainless Steel 440C Nuts from Lina Fasteners are known for their exceptional hardness, strength, and wear resistance. Whether used in high-temperature environments or exposed to corrosive conditions, these nuts ensure secure and long-lasting fastening solutions. Lina Fasteners continues to serve industries worldwide with products that deliver outstanding reliability and performance.
Stainless Steel 440C Nuts are made from a high-carbon martensitic stainless steel alloy, typically containing 16–18% chromium and around 0.95–1.20% carbon. This composition gives 440C its excellent hardness and wear resistance after heat treatment, making it one of the hardest stainless steels available. The material also offers high tensile strength, corrosion resistance in mildly corrosive environments, and good dimensional stability. Due to its martensitic structure, 440C is heat treatable, achieving hardness levels exceeding 58 HRC, making it ideal for high-stress, high-wear applications requiring long-lasting and robust fastening solutions.
| Element | SS 440C |
| Ni | – |
| C | 0.95 – 1.20 |
| Mn | 1.0 max |
| P | 0.040 max |
| S | 0.030 max |
| Si | 1.0 max |
| Cr | 16.0 – 18.0 |
| Mo | 0.75 |
| N | – |
| Element | SS 440C |
| Tensile Strength (MPa) min | 758 |
| Yield Strength 0.2% Proof (MPa) min | 448 |
| Elongation (% in 50mm) min | 14 |
| Hardness Rockwell (HR C) | 269HB max# |
| 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 |
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 440C Nuts are widely used in industries requiring high strength and wear resistance in both corrosive and high-stress environments. Common applications include aerospace components, high-performance machinery, automotive systems, and valves, where secure fastening under extreme conditions is critical. These nuts are also used in pumps, compressors, and industrial tools exposed to abrasion, heat, and chemicals. The excellent hardness and corrosion resistance of 440C make these nuts ideal for applications such as medical devi
Our commitment to excellence extends to our stainless steel 440C nuts, ensuring compliance with the highest standards. We carefully document every step, providing complete records such as trade invoices, packaging documents, fumigation certificates, heat treatment protocols, detailed quality charts and more. Our quality assurance includes rigorous testing with certificates such as EN 10204/3.1b to MTC, PMI test certificates, 100% radiography test reports. Additionally, third-party verification certifications attest to our commitment to high quality and reliability. Each stainless steel 440C nut is carefully packaged in accordance with international standards to ensure safe transport and storage, reinforcing our commitment to providing exceptional products with complete customer satisfaction in the density.
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
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