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Azlewood Fasteners, based in Canberra, Australia, is a well-respected manufacturer and supplier of top-notch Stainless Steel 321 / 321H Bolts. These titanium-stabilized stainless steel bolts are crafted for outstanding performance in high-temperature and corrosive settings. SS 321 / 321H Bolts are known for their excellent resistance to oxidation and intergranular corrosion, making them perfect for long-term use in tough industrial conditions. With cutting-edge technology and rigorous quality control in their production, these bolts deliver exceptional strength, precise dimensions, and remarkable durability. They find extensive application in chemical processing, power generation, aerospace, and marine industries, ensuring reliable fastening even under heat, stress, and corrosive environments.
Stainless Steel 321 / 321H Bolts consist of 17–19% chromium, 9–12% nickel, and titanium (at least five times the carbon content), which stabilizes the alloy against carbide formation during welding and heat exposure. The 321H variant features a higher carbon content (0.04–0.10%), boosting creep strength and high-temperature tensile strength. These bolts showcase a tensile strength ranging from 515–700 MPa, a yield strength of about 205 MPa, and impressive oxidation resistance up to 870°C. They blend excellent ductility, toughness, and corrosion resistance, ensuring reliable mechanical performance in both thermally and chemically challenging environments.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347 | min. | – | – | – | – | – | 17.0 | 2.00 | 9.0 | – |
| max. | 0.08 | 2.0 | 1.00 | 0.045 | 0.030 | 20.0 | 3.00 | 13.0 | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 347 | 515 | 205 | 40 | 95 | 201 |
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 Bolts are commonly found in refineries, heat exchangers, exhaust systems, boilers, pressure vessels, and gas turbine components that operate at high temperatures. Thanks to their titanium stabilization, they are perfect for welded assemblies and environments with thermal cycling, effectively preventing intergranular corrosion and structural degradation. These bolts are also utilized in the chemical processing, aerospace, power generation, marine, and food processing sectors, where resistance to oxidation and heat is crucial. SS 321 / 321H Bolts provide secure and dependable fastening solutions, ensuring safety and performance in demanding applications.
At Hazlewood Fasteners we ensure the highest standards in packaging for our Stainless Steel 321/321H bolts. Each bolt is thoroughly inspected and protectively wrapped to prevent damage during transport. They are then placed in tightly labeled boxes with product details and detailed quantities. Our packaging products are designed to be environmentally and physically friendly, ensuring that your high-performance bolts arrive in optimal 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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