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Hazlewood Fasteners, based in Canberra, Australia, is a reliable manufacturer and supplier of high-performance Stainless Steel 321 / 321H Fasteners. These fasteners, made from titanium-stabilized austenitic stainless steel, are crafted for outstanding performance in high-temperature and corrosive settings. They’re well-known for their impressive resistance to oxidation, scaling, and intergranular corrosion, ensuring long-lasting stability and durability even under thermal stress. With a commitment to precision engineering and rigorous quality checks, Hazlewood Fasteners guarantees that every product meets international standards. These fasteners find their place in industries like chemical, petrochemical, aerospace, marine, and power generation, where strength and heat resistance are crucial.
Stainless Steel 321 / 321H Fasteners consist of 17–19% chromium, 9–12% nickel, and titanium (at least five times the carbon content) to avoid carbide precipitation during welding and exposure to high temperatures. The 321H variant features a higher carbon content (0.04–0.10%), which boosts creep strength and resistance to stress rupture. These fasteners showcase tensile strength ranging from 515–700 MPa, yield strength around 205 MPa, and can withstand oxidation up to 870°C. They also provide excellent ductility, toughness, and corrosion resistance, ensuring dependable performance in thermally cycling and chemically aggressive industrial environments.
| Standard | ASTM A193,A194 / ASME SA193,SA194 |
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3 mm to 200 mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| 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 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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 Fasteners are widely used in boilers, heat exchangers, refineries, exhaust systems, pressure vessels, and power plants that operate in high-temperature and corrosive conditions. Their titanium stabilization offers remarkable resistance to intergranular corrosion, making them perfect for welded structures and applications involving thermal cycling. These fasteners are also commonly found in the chemical processing, marine, food processing, and aerospace sectors, where resistance to oxidation and scaling is essential.
At Hazlewood Fasteners, we ensure the quality and protection of our Stainless Steel 321/321H fasteners during installation. Each binder is thoroughly inspected and individually wrapped in protective packaging to prevent corrosion. They are then placed in tightly labeled boxes with detailed product descriptions and quantities. Our packaging is designed to protect against environmental and physical effects, ensuring that your high-performance fasteners arrive in pristine condition and ready for immediate use.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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