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Aria Fasteners, located in Hamilton, New Zealand, has earned a solid reputation as a reliable manufacturer and supplier of top-notch industrial fastening solutions. Their Stainless Steel 321 / 321H Nuts are crafted to deliver exceptional corrosion resistance, mechanical strength, and durability, especially in high-temperature and challenging environments. With a focus on precision and rigorous quality control, these nuts guarantee secure and long-lasting fastening for critical assemblies. Aria Fasteners caters to various industries, including aerospace, petrochemical, power generation, and thermal processing, providing components that are built to perform consistently under thermal cycling and extreme service conditions.
The Stainless Steel 321 / 321H Nuts are constructed from a titanium-stabilized austenitic stainless steel alloy, which offers remarkable resistance to intergranular corrosion and oxidation in high-temperature applications. The 321H grade, featuring a higher carbon content, boosts strength and mechanical stability at elevated temperatures while ensuring long-term corrosion resistance. These nuts are designed to provide high tensile strength, durability, and resistance to thermal fatigue, with precision machining that guarantees proper engagement with bolts, studs, and washers, ensuring reliable clamping force in both static and dynamic assemblies.
| 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 are used in high-temperature environments where strength and durability are critical. They are ideal for aerospace applications, automotive exhaust systems and petrochemical plants that experience high temperatures. These walnuts are also used medicinally for their resistance to sulfuric and phosphoric acids. Their robust properties ensure reliability in materials subject to heat and corrosion, making them essential for high-performance industrial systems
These nuts find extensive use in industries that demand heat-resistant, corrosion-resistant, and mechanically reliable fastening solutions. They are perfect for applications such as boiler assemblies, heat exchangers, furnace components, flanged joints, and industrial machinery that operate at high temperatures. Additionally, Stainless Steel 321 / 321H Nuts are utilized in chemical processing equipment, aerospace structures, and high-temperature assemblies where secure and durable fastening is crucial. Their unique blend of thermal resistance, mechanical strength, and corrosion protection makes them a trustworthy choice for various demanding applications.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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