Walid Stainless, headquartered in Tunis, Tunisia, is a trusted manufacturer and supplier of high-quality stainless steel fasteners. Their Stainless Steel 321 Nuts are designed for applications requiring excellent resistance to corrosion and high temperatures. Stabilized with titanium, these nuts prevent intergranular corrosion after welding, ensuring long-term durability. Manufactured with precision and strict quality control, Walid Stainless delivers nuts with accurate threading, smooth finishes, and reliable mechanical performance. Customers rely on Stainless Steel 321 Nuts for secure fastening, long service life, and dependable operation in industrial, chemical, and high-temperature applications.
Stainless Steel 321 Nuts are made from an austenitic stainless steel alloy containing approximately 17–19% chromium, 9–12% nickel, and titanium for stabilization. The titanium binds carbon, preventing carbide precipitation and intergranular corrosion, especially after welding. These nuts typically exhibit tensile strength between 515–700 MPa and hardness around 170–200 HB. Their austenitic structure provides excellent toughness, corrosion resistance, and mechanical stability at elevated temperatures, making them suitable for high-temperature and industrial applications.
| 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.
Walid 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 widely used in industries that require secure fastening under high temperatures and corrosive conditions. Typical applications include boilers, heat exchangers, chemical processing units, petrochemical equipment, and power generation machinery. Their resistance to intergranular corrosion and thermal stress makes them ideal for welded assemblies and long-term service in harsh environments. Engineers and maintenance professionals rely on 321 Nuts for durability, safety, and reliable fastening performance. Walid Stainless ensures each nut meets stringent quality standards, providing secure and dependable operation in industrial, chemical, and high-temperature applications.
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