Weston Stainless, Midland, UK, is a major distributor of top–grade stainless steel products for use in superior performance fasteners demanded by various industries. Stainless Steel 422 Nuts are constructed from grade 422 martensitic stainless steel, with high strength, resistance to oxidation, and good wear characteristics. They come in hex, heavy hex, coupling, and special shapes to ensure suitability for a wide range of industrial applications. With a special balance of chromium, molybdenum, tungsten, and vanadium, these nuts exhibit excellent mechanical strength and resistance to heat, and are specifically suited for applications in aerospace, power generation, and high stress.
Stainless Steel 422 Nuts consist of 12.0-14.0% chromium, 0.20-0.25% carbon, 0.75-1.25% molybdenum, 0.50-1.00% vanadium, and 0.75-1.25% tungsten with small amounts of silicon, manganese, phosphorus, and sulfur. They have a tensile strength of 1034 MPa, yield strength of 827 MPa, and hardness of up to 45 HRC, with high durability. They have a density of about 7.8 g/cm³ and a melting point of about 1425°C, resulting in high thermal stability, creep resistance, and corrosion resistance, which makes them ideal for harsh environments.
| 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.
Stainless Steel 422 Nuts are found in widespread application in power plants, steam turbines, and aeronautic applications, where high-temperature properties are needed. They also find suitable use in petrochemical, gas turbine, and heat exchanger applications, which require them to be durable against cyclic thermal stress. They resist oxidation and corrosion and thus can be used for marine, automotive, and structural engineering applications. Further, these nuts can be discovered in boiler fittings, pressure vessels, and furnace parts, where they exhibit excellent fatigue life and extended service life even in extreme industrial conditions.
Weston Stainless offers Stainless Steel 422 Nuts with mill test certificates (MTC) according to EN 10204 3.1/3.2 for conformity to international standards. The nuts are packed with extra care in wooden crates, plastic wrapping, or as per specific protective packaging to avoid damage during shipping. With an aggressive supply chain and streamlined logistics, Weston Stainless delivers on time, serving the needs of industries with accuracy and reliability.
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