Harshita Stainless, a reputable manufacturer and supplier based in Delhi, India, specializes in high-quality Stainless Steel 321H Nuts that are engineered for exceptional performance in high-temperature and corrosive settings. With a strong focus on precision engineering and compliance with international standards, Harshita Stainless provides robust fastening solutions for critical applications across various industries. The 321H grade, which is a high-carbon variant of 321 stainless steel, offers improved strength and creep resistance. These nuts are particularly well-suited for demanding sectors like petrochemical, power generation, and aerospace, where dependable fastening, resistance to thermal stress, and structural integrity are essential for long-term operational success.
Stainless Steel 321H is a titanium-stabilized austenitic alloy featuring a higher carbon content (0.04–0.10%) that enhances its high-temperature strength. It contains 17–19% chromium, 9–12% nickel, and up to 0.7% titanium, which helps to prevent carbide precipitation during welding. The mechanical properties of 321H nuts include a tensile strength of 515–620 MPa, yield strength of 205–275 MPa, elongation of 40–50%, and a hardness rating of around 80–90 HRB. These characteristics make them perfect for high-stress, high-temperature, and welded environments.
| 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.
You’ll find Stainless Steel 321H Nuts commonly used in power plants, heat exchangers, pressure vessels, exhaust systems, and boiler equipment, thanks to their outstanding strength and resistance to oxidation and intergranular corrosion. They excel in thermal cycling applications and welded structures, where enhanced creep resistance and mechanical stability are crucial. Additionally, these nuts are utilized in the chemical, petrochemical, and aerospace industries, where they frequently encounter high heat and corrosive substances. Their durability, high-temperature resilience, and structural reliability make them a top choice for demanding industrial applications.
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