Harsh Metalloys is a well-respected manufacturer and supplier of Stainless Steel 321H nuts, proudly based in Mumbai, India. We provide top-notch fastening solutions that are specifically designed to excel in high-temperature and corrosive environments. Our SS 321H nuts are crafted from high-quality raw materials and utilize advanced production techniques to ensure they meet international quality and performance standards. With years of experience in the industry and a strong commitment to reliability, Harsh Metalloys caters to a variety of sectors, including petrochemicals, power generation, thermal processing, and refineries. Our focus on precision, timely delivery, and customer satisfaction has helped us build a trusted reputation in both domestic and global markets.
Stainless Steel 321H nuts are made from an austenitic stainless steel alloy that contains 17–19% chromium, 9–12% nickel, and titanium to prevent intergranular corrosion. The “H” designation signifies a higher carbon content, which boosts high-temperature strength and creep resistance. These nuts boast a tensile strength of around 515 MPa and a yield strength of about 205 MPa. SS 321H nuts are known for their excellent resistance to oxidation and scaling at temperatures reaching up to 870°C. They also offer good weldability, mechanical toughness, and long-lasting performance in high-temperature settings.
| 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 high-temperature industrial applications like exhaust systems, furnace components, heat exchangers, and pressure vessels. They’re perfect for petrochemical processing, power plants, thermal reactors, and aerospace systems where resistance to oxidation and thermal stress is crucial. SS 321H nuts maintain their structural integrity even under thermal cycling, making them suitable for fastening components that are exposed to prolonged heat. Their blend of high-temperature strength, corrosion resistance, and durability makes them a go-to choice for engineers and manufacturers working in challenging environments.
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