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At Mazin Fasteners, we are the leading manufacturer and supplier of Stainless Steel 321/321H nuts in Muscat, OMAN. Our fruit is specially designed for high humidity environments, giving it exceptional resistance to rust and oxidation. Ideal for the aerospace, automotive, and medical industries, our stainless steel 321/321H nuts meet stringent quality standards to ensure reliability and durability. Trust us in perfectly designed nuts that provide consistent, long-lasting performance in tough industrial applications.
Mazin Fasteners, based in Muscat, Oman, stands out as a top-notch manufacturer and supplier of high-quality industrial fasteners. They cater to a variety of sectors, including oil and gas, petrochemical, marine, and construction. The company has built a solid reputation for providing precision-engineered products that adhere to international standards. Among their impressive lineup are the Stainless Steel 321 / 321H Nuts, which are highly regarded for their outstanding corrosion resistance, durability, and strength, especially in high-temperature and challenging environments. Mazin Fasteners guarantees that these nuts deliver dependable and long-lasting fastening solutions for critical industrial applications, all while ensuring top-notch quality and timely delivery.
| 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.
These Stainless Steel 321 / 321H Nuts are crafted with a blend of chromium and nickel, and they’re stabilized with titanium to prevent carbide precipitation during welding, which boosts their resistance to intergranular corrosion. The 321H variant features controlled carbon content, enhancing its performance at elevated temperatures. These nuts are designed to offer high tensile and yield strength, toughness, and excellent dimensional stability under thermal stress. Their unique combination of mechanical and chemical resistance makes them perfect for demanding industrial applications where durability and performance are non-negotiable.
You’ll often find these nuts in chemical and petrochemical plants, boilers, heat exchangers, pressure vessels, and high-temperature flanged connections. They’re ideal for securing bolts, pumps, valves, and other critical assemblies that face oxidizing or corrosive conditions. With their ability to provide secure load distribution, long service life, and minimal maintenance, Stainless Steel 321 / 321H Nuts are essential for industrial, marine, and high-temperature applications that require both strength and corrosion resistance.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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