Home > Stainless Steel 321 / 321H Nuts
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At Malik Fasteners, based in Manama, Bahrain, we take pride in being a reliable manufacturer and supplier of top-notch Stainless Steel 321 / 321H Nuts. These nuts are specifically designed to excel in high-temperature and corrosive settings. Crafted to meet international standards, they boast precise threading, accurate dimensions, and impressive mechanical strength. The addition of titanium stabilizes the Stainless Steel 321 / 321H, giving it remarkable resistance to intergranular corrosion, oxidation, and thermal stress, making it perfect for welded and high-temperature uses. Our nuts serve various industries, including aerospace, chemical processing, petrochemical, power generation, and automotive, providing secure fastening solutions that ensure joint integrity, structural stability, and long-lasting performance even in the toughest conditions.
When it comes to composition and mechanical properties, our Stainless Steel 321 / 321H Nuts are made up of chromium (17–19%), nickel (9–12%), and titanium as a stabilizer. The 321H variant features a low carbon content (<0.04%), which boosts its strength at high temperatures. These nuts deliver high tensile and yield strength, along with excellent hardness, toughness, and stability under thermal and mechanical stress. Thanks to their austenitic microstructure, they offer great ductility and corrosion resistance, as well as protection against intergranular attack and oxidation in welded assemblies. These impressive mechanical and chemical properties make SS 321 / 321H Nuts the go-to choice for industrial applications that require secure fastening, high strength, and long-lasting durability in challenging environments.
| Specifications | IS, BS, ASTM |
| Standard | ASTM / ASME – A/ SA 193 |
| Length | 3 mm to 200 mm |
| Size | M02 to M33 |
| Type | Hex Nuts, Dome Nuts, Hex Machine Screw Nuts, Hex Lock Nuts Nylon Insert, Hex Jam Nuts, Hex Jam Nylon Lock Nuts, Heavy Hex Nuts, Wing Nuts, Cap Nuts, Acorn Nuts, Square Nuts, K-Lock Nuts, Prevailing Torque Lock Nuts, Top Lock Nuts, Two-Way Reversible Lock Nuts, Pin-Lock Nuts, T-Nuts, Coupling Nuts, T-Slot Nuts, Castle Nuts, Flange Nuts Serrated, Machine Hex Nuts, Finished Hex Nuts, Forged Eye Nut, Rivet Nuts, Slotted Hex Nut, Acme Hex Nuts, Nylock Nuts, Anco Locknuts, Flexloc Nuts, Reversible Locknuts, Panel Nut, Poly Nut, Conelock Nut, Self Clinching Nuts, Domed Cap Nuts, Imperial Thread Nuts, Imperial Thread Nylock Nuts, Sleeve Nuts, Thin Nuts, Weld Nuts, High Tensile Nuts, Cage Nuts, Security Nuts, Imperial Nuts, Industrial Nuts, Miscellaneous Nuts, Insert Nuts, Knurled Nuts, Round Nuts |
| Element | SS 321 |
| Ni | 9.0 – 12.0 |
| C | 0.08 |
| Mn | 2.0 max |
| P | 0.045 max |
| S | 0.030 max |
| Si | 0.75 max |
| Cr | 17.0 – 19.0 |
| Mo | – |
| N | 0.10 |
| Element | SS 321 |
| Tensile Strength (MPa) min | 515 |
| Yield Strength 0.2% Proof (MPa) min | 205 |
| Elongation (% in 50mm) min | 40 |
| Rockwell B (HR B) max Hardness | 95 |
| Brinell (HB) max Hardness | 217 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 321 / 321H Nuts find their place in a variety of high-temperature and corrosive applications where secure fastening and mechanical reliability are crucial. You’ll often see them in aerospace components, chemical and petrochemical facilities, power generation equipment, and automotive exhaust systems. Their robust design ensures they can handle the demands of these industries, providing peace of mind and performance you can count on.
At Malik Fasteners, we take great care in installing our Stainless Steel 321/321H nuts to ensure they arrive in pristine condition. Each nut is carefully inspected and individually wrapped with protective material to prevent corrosion. They are then placed in tightly labeled boxes with detailed product details and quantities. Our packaging is designed to protect the environment and physical effects, ensuring that your high-performance fruit is delivered safely and ready for immediate use.
Malik Fasteners is a leading manufacturer and supplier of high-quality fasteners in Manama, Bahrain, with over 8 years of experience serving global industries.
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