Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality stainless steel products. Among their specialized offerings are Stainless Steel 312H Nuts, designed for applications requiring exceptional high-temperature strength, oxidation resistance, and long-term durability. These nuts are ideal for industrial, chemical, and power-generation assemblies exposed to extreme heat and aggressive environments. At Walid Stainless, each nut is manufactured with precision and undergoes rigorous quality control to ensure consistent performance. Clients rely on 312H Nuts for secure, reliable, and long-lasting fastening solutions, making them a preferred choice for demanding high-temperature industrial projects.
Stainless Steel 312H Nuts are made from a high-alloy austenitic stainless steel containing approximately 25–26% chromium, 20–22% nickel, and small amounts of silicon and carbon (0.08–0.15%). This composition provides excellent oxidation and corrosion resistance at elevated temperatures. These nuts typically exhibit tensile strength between 600–750 MPa and hardness around 180–220 HB. The austenitic structure ensures superior creep resistance, mechanical durability, and dimensional stability under thermal and mechanical stress. 312H Nuts are suitable for high-temperature, chemically aggressive, and demanding industrial fastening applications requiring long-term reliability.
| Specifications Of | 321H Stainless Steel Nuts |
|---|---|
| Length Sizes | 3 millimeter to 200 millimeter |
| Head Type | Hex, Square |
| Head Style | Hex, Square |
| Standard | ASME B18.2.2 ASME B16.5 ASME B18.5 ANSI B 18.2.4 2M DIN = DIN 931, DIN 933, DIN 934, DIN 970 ISO = ISO 4033, ISO 4032, JIS UTS = UNF, NPTF, NPT, UNC, UNEF, UNS |
| Surface Coating | Hot Dipped Galvanizing Coated Nuts Phosphate Coated Nuts Zinc Coated Nuts Cadmium Coated Nuts Teflon Coated Nuts Xylon Coated Nuts |
| Type Of Nuts | Coupling Nuts, Serrated Flange Locknuts, Square Nuts, Heavy Hex Nuts, Flange Nuts |
Grade | Mn | N | P | C | S | Cr | Mo | Si | Ni | Other | |
Stainless Steel 321H Nuts | minimum maximum | 2.00 | – | 0.045 | 0.04 0.10 | 0.030 | 17.0 19.0 | – | 0.75 | 9.0 12.0 | Ti=4(C+N) 0.70 |
Grade | Tensile Strength (MPa) minimum | Yield Strength 0.2% Proof (MPa) minimum | Elongation (% in 50mm) minimum | Hardness | |
Rockwell B (HR B) maximum | Brinell (HB) maximum | ||||
321H Stainless Steel Fasteners | 515 | 205 | 40 | 95 | 217 |
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Corrosion-resistant product ideal for high-temperature applications. Stainless Steel 321H Nuts are available in sizes from M6 to M36, designed for use in aerospace and chemical processing environments, offering excellent heat and oxidation resistance.
Stainless Steel 321H Coupling Nuts are used to connect threaded rods in high-temperature settings. Sizes range from M6 to M36, suitable for applications in chemical processing and aerospace where heat resistance and durability are essential.
Stainless Steel 321H Nylon Insert Nuts feature a nylon insert to prevent loosening under high temperatures. Available in sizes from M6 to M24, they are ideal for applications in industrial machinery and exhaust systems where stability and heat resistance are crucial.
Stainless Steel 321H Flange Hex Nuts provide enhanced load distribution with their integrated flanges. Sizes range from M6 to M24, making them suitable for high-temperature environments like chemical processing and aerospace, offering both strength and corrosion resistance.
Stainless Steel 321H Heavy Hex Nuts are designed for high-stress and high-temperature applications. Available in sizes from M6 to M36, they are used in industrial machinery and aerospace components, providing exceptional strength and heat resistance.
Stainless Steel 321H Square Nuts offer a large surface area for effective torque application. Sizes range from M6 to M24, suitable for high-temperature and industrial applications, ensuring durability and stability in demanding environments.
We ensure complete documentation for our Stainless Steel 321H Nuts, which means transparency and reliability. Our documents include a commercial invoice, a packaging list, a fumigation certificate, a heat treatment chart, and a quality assurance plan. The package also includes an NABL-approved lab test report, confirming strict standards. Further, quality is demonstrated through many test certificates in the form of MTC according to EN 10204/3.1b, PMI Test Certificate, 100% radiography test report, and a third-party inspection certificate. These guarantee 100% client satisfaction along with confidence for the integrity of our products.
Stainless Steel 312H Nuts are widely used in industries requiring heat-resistant, corrosion-resistant, and durable fastening solutions. They are ideal for furnaces, boilers, heat exchangers, chemical processing equipment, power-generation machinery, and structural assemblies exposed to extreme temperatures and oxidizing environments. The high-alloy austenitic structure ensures long-term dimensional stability, mechanical reliability, and resistance to oxidation and stress corrosion. Engineers and technicians rely on 312H Nuts for safe, secure, and consistent fastening performance. Walid Stainless ensures that each nut meets strict quality standards, providing dependable materials for chemical, power, and high-temperature industrial projects requiring strength, durability, and reliability.







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