Aditya Stainless is a well-respected manufacturer and supplier of Stainless Steel 321 Nuts, proudly based in Kolkata, India. Crafted from titanium-stabilized austenitic stainless steel, these nuts are designed to resist intergranular corrosion and perform exceptionally well in high-temperature settings. You’ll find SS 321 nuts in various industries, including aerospace, chemical processing, thermal equipment, and heat exchangers, where thermal stability and mechanical strength are crucial. Meeting international standards like ASTM A194, we offer these fasteners in a variety of dimensions, thread types, and surface finishes, ensuring precision manufacturing and long-lasting durability with every nut we provide.
Stainless Steel 321 Nuts are primarily made up of chromium (17–19%) and nickel (9–12%), with titanium added (at least five times the carbon content) to prevent carbide precipitation. These nuts boast a tensile strength of about 515–620 MPa, a yield strength of 205 MPa, and an elongation of around 35%. Thanks to the titanium stabilization, they show remarkable resistance to intergranular corrosion, even post-welding. With excellent oxidation resistance, thermal stability, and mechanical strength, SS 321 nuts are perfect for elevated temperature and mildly corrosive environments.
| Specifications Of | 321 Stainless Steel Nuts |
|---|---|
| Length Sizes | 3 millimeter to 200 millimeter |
| Head Type | 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 Bolts Phosphate Coated Bolts Zinc Coated Bolts Cadmium Coated Bolts Teflon Coated Bolts Xylon Coated Bolts |
| Type Of Nuts | Coupling Nuts, Nylon Insert Nuts, Flange Hex Nuts, Heavy Hex Nuts, Square Nuts |
|
Grade |
Mn |
N |
P |
C |
S |
Cr |
Mo |
Si |
Ni |
Other |
|
|
321 Stainless Steel Nuts |
minimum maximum |
2.00 |
0.10 |
0.045 |
– 0.08 |
0.030 |
17.0 19.0 |
– |
0.75 |
9.0 12.0 |
Ti=5(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 |
||||
|
321 Stainless Steel Nuts |
515 |
205 |
40 |
95 |
217 |
Contact us to get a quick quote for your requirement.
An ideal corrosion resistant material for high humidity environments. Stainless steel 321 nuts are available in sizes from M6 to M36 and are used in aerospace and chemical applications, providing excellent oxidation resistance and durability
The stainless steel 321 coupling nuts are designed to hold threaded rods together under extreme conditions. Sizes range from M6 to M36, making it suitable for high-temperature aerospace and medical applications where reliability is critical.
The stainless steel 321 nylon insert nuts have a nylon insert for a secure fastening. Available in sizes from M6 to M24, they offer stability and resistance to high temperatures, and are ideal for use in industrial appliances and air filters.
Stainless steel 321 flange hex nuts for enhanced weight distribution with integrated flanges. Sizes range from M6 to M24, making it perfect for hot temperature environments, such as chemical processing and aerospace applications.
The heavy duty stainless steel 321 hex nuts are designed for high pressure, high temperature applications. Available in sizes from M6 to M36, they are used in applications requiring high strength and thermal stability, including aerospace and chemical applications
Stainless steel 321 square nuts provide large surface area for efficient torque application. Sizes range from M6 to M24, making them suitable for hot and humid environments, such as in chemical processing and industrial machinery.
Aditya Stainless provides nuts made of stainless steel 321, which assures consistent performance. The materials undergo an extensive series of tests, including hardness testing, spectro analysis, PMI, and flaring tests. We further undertake micro and macro tests, pitting resistance, and IGC tests for superior quality in every material we deliver. Apart from these strict testing procedures, we give full documentation which includes commercial invoices, packing lists containing the net and gross weight, box number, and labels. The legalized or attested Certificate of Origin along with Third-Party Inspection Certificates assures full assurance about our commitment towards superior products and unmatched customer satisfaction.
Stainless Steel 321 Nuts are perfect for securing components in high-temperature and welded settings. They’re frequently found in thermal processing systems, chemical reactors, aerospace structures, exhaust manifolds, boilers, and superheater equipment. Their resistance to intergranular corrosion and stress rupture makes them a top choice for pressure vessels and heat exchangers. SS 321 nuts are also favored in the petrochemical, refining, and power generation sectors for applications that involve repeated thermal cycling and welded joints. Their unique blend of strength, stability, and corrosion resistance guarantees reliable performance in demanding environments.
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