Adam Stainless stands out as a reliable manufacturer and supplier of Stainless Steel 321 / 321H Fasteners right in Canberra, Australia. Known for their high-performance fastening solutions, Adam Stainless specializes in fasteners that excel in high-temperature and corrosive environments. Their 321 and 321H fasteners are perfect for applications that demand exceptional weldability, oxidation resistance, and long-lasting durability. With a commitment to precision engineering and rigorous quality control, Adam Stainless guarantees that every product adheres to both Australian and international standards. Various industries across Australia trust their expertise and dependability for stainless steel fasteners designed to thrive in challenging industrial settings.
The Stainless Steel 321 / 321H Fasteners from Adam Stainless in Canberra, Australia, are made up of 17–19% chromium and 9–12% nickel, with titanium added to prevent intergranular corrosion. The 321H grade features a higher carbon content (up to 0.10%) to enhance strength at elevated temperatures. These fasteners boast impressive tensile strength, creep resistance, and outstanding performance in environments reaching up to 900°C. Their stabilized composition helps them resist sensitization during welding. Adam Stainless meticulously balances chemical and mechanical properties, ensuring that their fasteners are reliable for high-temperature applications and structurally demanding tasks across various industries.
Specification : ASTM F593, F594, F1554 / ASME SF593, F594, F1554
Standard : DIN, ASTM, BS and all International Standards
Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Machine Screws Size : M1.6 – M12
Self Tapping Screw Size : No.2 – No. 14
Length : 3 mm to 200 mm
Types : Nuts, Bolts, Screws, Stud Bolts, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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Stainless Steel 321 Nuts offer excellent resistance to oxidation and corrosion, particularly in high-temperature environments. They are typically available sizes from M6 to M36, with various thread standards. They are commonly used in aerospace and industrial applications where high temperatures are prevalent.
Stainless Steel 321H Stud Bolts provide outstanding oxidation and chemical corrosion resistance, especially in high-temperature conditions. They usually come in lengths from 50 mm to 300 mm and diameters from M8 to M30. Ideal for high-stress environments in chemical processing and aerospace industries.
Stainless Steel 321H Bolts offer high resistance to corrosion and oxidation in elevated temperatures. They are available in sizes ranging from M6 to M36, tailored to specific length requirements, and are widely used in structural and high-temperature applications.
Stainless Steel 321 and 321H threaded rods are designed to resist corrosion and oxidation in harsh environments. They typically come in lengths from 100 mm to 1000 mm and diameters from M6 to M30. Suitable for structural and high-temperature applications.
Stainless Steel 321 screws provide excellent resistance to rust and oxidation, especially at elevated temperatures. They are available in various sizes from M2 to M20 and are often used in applications where resistance to heat and corrosion is critical.
Stainless Steel 321H washers offer strong resistance to corrosion and high temperatures. They come in sizes that match common bolt and nut dimensions, typically from M6 to M36. It is ideal for use in high-temperature applications and aggressive environments.
Manufactured by Adam Stainless in Canberra, Australia, the Stainless Steel 321 / 321H Fasteners are extensively utilized in sectors like aerospace, petrochemical, thermal processing, oil and gas, and power generation. These fasteners are particularly suited for securing components in high-heat environments, ensuring safety and reliability in critical applications.
Stainless Steel 321 and 321H fasteners are used in high-temperature environments due to their excellent resistance to oxidation and corrosion. They are ideal for aerospace, chemical processing, and petrochemical applications. Where high heat and aggressive environments are common. Their stabilization with titanium helps prevent carbide precipitation during welding, making them suitable for structural applications and equipment in power generation and marine industries. They offer durability and reliability in demanding conditions, ensuring long-term performance in critical applications.







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