Mitchell Stainless is a reliable manufacturer and supplier of Stainless Steel 442 nuts based in Hamilton, New Zealand. They specialize in providing high-performance fastening solutions tailored for tough industrial settings. With a reputation for precision manufacturing and rigorous quality control, Mitchell Stainless produces SS 442 nuts that deliver outstanding strength, wear resistance, and reliability even at high temperatures. They cater to various industries, including power generation, petrochemical, engineering, and heavy fabrication, always aiming to meet international standards and specific customer needs. Thanks to their advanced production facilities and a focus on customer satisfaction, Mitchell Stainless guarantees consistent quality, timely deliveries, and durable fastening products for critical applications.
Stainless Steel 442 is a martensitic stainless steel alloy known for its high chromium content, usually between 18–23%, and low carbon levels. This unique blend gives it impressive corrosion resistance along with high hardness and strength. SS 442 nuts are recognized for their excellent wear resistance, high tensile strength, and good toughness, especially after proper heat treatment. They maintain their mechanical stability at elevated temperatures and resist scaling and oxidation, making them perfect for high-stress and high-temperature fastening applications that demand durability and structural integrity.
| 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.
Mitchell 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 find their place in a variety of applications that require high strength, heat resistance, and moderate corrosion protection. You’ll often see them in power plants, thermal equipment, exhaust systems, furnaces, and petrochemical facilities. SS 442 nuts are also ideal for heavy engineering projects, machinery assemblies, and industrial structures that face elevated temperatures and mechanical loads. Their durability makes them a go-to choice for bolting systems in valves, pumps, and pressure equipment. Mitchell Stainless offers SS 442 nuts customized to meet specific needs, ensuring they perform reliably in demanding environments.
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