Mitchell Stainless has earned a solid reputation as a reliable manufacturer and supplier of top-notch Stainless Steel 422 nuts right here in Hamilton, New Zealand. We cater to the rigorous demands of various industries with a keen emphasis on precision engineering and consistent quality that meets international standards. Our Stainless Steel 422 nuts are celebrated for their impressive strength, outstanding wear resistance, and dependable performance even in high-temperature conditions. With state-of-the-art manufacturing facilities and a focus on customer satisfaction, we guarantee timely deliveries, competitive pricing, and tailored solutions for the engineering, power, and heavy-duty industrial sectors.
Stainless Steel 422 is a martensitic stainless steel alloy that includes chromium, carbon, and carefully controlled amounts of molybdenum and other elements to boost its hardness and strength. This alloy boasts high tensile strength, good toughness, and remarkable resistance to wear and fatigue. Naturally heat-treatable, SS 422 achieves exceptional hardness and enhanced mechanical stability at elevated temperatures. These characteristics make Stainless Steel 422 nuts ideal for high-stress environments where dimensional stability, moderate corrosion resistance, and a long service life are essential.
| 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 422 nuts come in sizes from M6 to M64. Known for high strength and wear resistance, they are suitable for aerospace and automotive applications requiring durability under high stress.
A corrosion-resistant product, Stainless Steel 422 coupling nuts, used to connect two male threads, are available in sizes from M6 to M36. Their high strength and heat resistance make them ideal for heavy-duty industrial applications.
A corrosion-resistant product, Stainless Steel 422 nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert prevents loosening due to vibration, making them ideal for high-stress applications.
A corrosion-resistant product, Stainless Steel 422 flange hex nuts feature an integrated flange and come in sizes from M5 to M20. They provide load distribution and stability, suitable for high-stress and high-temperature environments.
A corrosion-resistant product, Stainless Steel 422 heavy hex nuts are available in sizes from M10 to M48. Their thicker design offers increased strength and durability, ideal for heavy-duty and high-stress applications.
A corrosion-resistant product, Stainless Steel 422 square nuts provide a larger contact surface and come in sizes from M6 to M30. They are suitable for high-stress and heavy clamping applications where stability is crucial.
Mitchell Stainless ensures high-quality material with rigorous testing, such as hardness, spectro analysis, PMI, tensile, micro and macro structural, pitting resistance, and IGC testing. We assure superior performance through these checks. In addition to our quality commitment, we provide the following essential documentation: commercial invoices, packaging lists with weights, box numbers, labels, and a Certificate of Origin legalized by the Chamber of Commerce or Embassy. Our Third-Party Inspection Certificate ensures full customer satisfaction with the price and delivery of Stainless Steel 422 Nuts.
The Stainless Steel 422 nuts from Mitchell Stainless find their way into a variety of applications that require both high strength and thermal stability. You’ll commonly see them in power generation equipment, gas and steam turbines, aerospace components, and high-temperature fastening systems. They’re also utilized in petrochemical plants, automotive performance assemblies, and heavy engineering structures where reliability under stress is absolutely crucial.







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