Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of premium stainless steel products. Among their specialized offerings are Stainless Steel 442 Nuts, designed for applications requiring exceptional corrosion resistance, high-temperature stability, and mechanical strength. These nuts are ideal for industrial, chemical, and structural assemblies exposed to challenging environments. At Walid Stainless, every nut is manufactured with precision and undergoes rigorous quality control to ensure consistent performance. Clients rely on 442 Nuts for secure, durable, and reliable fastening solutions, making them an excellent choice for demanding industrial and mechanical projects.
Stainless Steel 442 Nuts are made from a high-chromium ferritic stainless steel alloy containing approximately 17–19% chromium and 0.2–0.5% molybdenum. This composition provides excellent corrosion resistance, high-temperature stability, and resistance to oxidation. The nuts typically exhibit tensile strength between 600–750 MPa and hardness around 180–220 HB. Their ferritic structure ensures wear resistance, dimensional stability, and mechanical durability, making 442 Nuts suitable for industrial, chemical, and structural fastening applications where high-temperature performance and long-term reliability are critical.
| Material | Specification | Standards | Length | Size |
| 442 Stainless Steel Fasteners | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | 3 mm to 200 mm | M 02 to M 160 |
| Component | Wt. % |
| C | 0.23 |
| Cr | 12.5 |
| Fe | 83 |
| Mn | 0.5 |
| Mo | 1 |
| Ni | 0.8 |
| P | 0.02 |
| S | 0.015 |
| Si | 0.38 |
| V | 0.23 |
| W | 1 |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Brinell | 290 | 290 | Estimated from Rockwell C value for Brinell test with 3000 kg load/10 mm diameter ball |
| Hardness, Knoop | 315 | 315 | Estimated from Rockwell C value. |
| Hardness, Rockwell C | 30 | 30 | |
| Hardness, Vickers | 304 | 304 | Estimated from Rockwell C value. |
| Tensile Strength, Ultimate | 897 MPa | 130000 psi | |
| Tensile Strength, Yield | 828 MPa | 120000 psi | 0.2% Offset |
| Elongation at Break | 15 % | 15 % | |
| Reduction of Area | 40 % | 40 % |
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A corrosion-resistant product, Stainless Steel 442 nuts are available in sizes from M6 to M64. They are designed for high-temperature applications, providing excellent oxidation resistance and durability in harsh environments like industrial furnaces and heat exchangers.
A corrosion-resistant product, Stainless Steel 442 coupling nuts, used to join two male threads, come in sizes from M6 to M36. Their high-temperature and oxidation resistance make them ideal for extended connections in thermal processing and industrial applications.
A corrosion-resistant product, Stainless Steel 442 nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert secures the nut against vibration and movement, suitable for high-temperature environments requiring secure and reliable fastening.
A corrosion-resistant product, Stainless Steel 442 flange hex nuts feature an integrated flange and come in sizes from M5 to M20. They distribute load over a larger area, enhancing stability and performance in high-temperature and corrosive environments.
A corrosion-resistant product, Stainless Steel 442 heavy hex nuts are available in sizes from M10 to M48. Their increased thickness and strength make them suitable for heavy-duty and high-temperature applications, ensuring robust and secure fastening.
A corrosion-resistant product, Stainless Steel 442 square nuts offer a larger surface area for contact, available in sizes from M6 to M30. They are ideal for high-temperature and heavy clamping applications, providing stability and reliable performance in challenging environments.
Walid Stainless offers the best quality in its Stainless Steel 442 Nuts through hardness, spectrochemical analysis, PMI, micro and macro testing, flaring, pitting resistance, and IGC tests, all of which are provided as proofs that make it reach the very highest standards. We are able to offer full documentations-detailed commercial invoices, accurate packaging list, box number, and labels-and the legalized Certificate of Origin, Third-Party Inspection Certificate reflect the transparency of products. Our commitment to excellence and detailed processes ensure 100% client satisfaction in the quality and pricing of our products.
Stainless Steel 442 Nuts are widely used in industries requiring heat-resistant, corrosion-resistant, and durable fastening solutions. They are ideal for chemical processing equipment, industrial machinery, boilers, heat exchangers, and structural assemblies exposed to high temperatures and corrosive environments. Their ferritic, molybdenum-enhanced composition ensures long-term dimensional stability, mechanical reliability, and resistance to oxidation and scaling. Engineers and technicians rely on 442 Nuts for safe, secure, and consistent fastening performance. Walid Stainless ensures that each nut meets strict quality standards, providing dependable materials for industrial, chemical, and high-temperature structural projects where corrosion resistance and mechanical strength are essential.
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