Khaled Stainless, located in Cairo, Egypt, specializes in manufacturing and supplying top-notch Stainless Steel 321 nuts designed for tough industrial applications. Our production process blends precision cold-forming, accurate threading, and strict dimensional control to comply with ISO and ASTM standards. Each nut is crafted from certified 321 stainless bar, fully traceable with mill test certificates and batch reporting. The titanium-stabilized alloy is resistant to intergranular corrosion even after being exposed to high temperatures, making our nuts perfect for welded assemblies and high-temperature fastenings. We provide both standard and custom sizes, special coatings, and supply-chain support for petrochemical, aerospace, power, and marine projects, both in Egypt and internationally.
Stainless Steel 321 is an austenitic alloy that contains about 17–19% chromium and 9–12% nickel, with titanium added as a stabilizer (usually around 0.5–1.0%) to bind carbon and prevent carbide precipitation. The carbon content is kept low (≤0.08%) to enhance stability at high temperatures. Typical mechanical properties for annealed 321 fastener stock include tensile strength ranging from approximately 500–700 MPa, yield strength around 205–275 MPa, and elongation often exceeding 40% under standard conditions. Hardness values generally fall between ~150–200 HB, depending on heat treatment and cold working. Supplied with material certification.
| 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.
Khaled 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 the go-to choice when high-temperature stability and resistance to intergranular corrosion are essential. You’ll commonly find them in petrochemical plants, heat exchangers, furnace components, exhaust systems, and welded assemblies that experience thermal cycling. They’re particularly popular in aerospace brackets, power generation equipment, and industrial boilers, where titanium stabilization helps prevent sensitization during welding. Available in heavy hex, hex, flange, and prevailing-torque styles, Khaled Stainless ensures you have the right solution for your needs.
©2024 Khaled Stainless All Rights Reserved.
