Adam Stainless is a well-known manufacturer and supplier of Stainless Steel 304H Nuts in Canberra, Australia, which offers high-quality fasteners designed with superior strength and performance under high-temperature conditions. These nuts are made from high-grade stainless steel with a higher carbon content that improves their mechanical properties and resistance to heat. Adam Stainless uses international standards to ensure every 304H nut is durable, resistant to corrosion, and accurately dimensioned. Perfect for high-demand industrial uses, our 304H nuts provide superior reliability and long-lasting performance. Through precision engineering and rigorous testing, Adam Stainless ensures fastening solutions that surpass customer expectations in all industries.
304H Stainless Steel Nuts are composed of 18–20% chromium, 8–11% nickel, and 0.04–0.10% carbon. The high carbon content raises tensile and yield strength but offers better creep resistance at elevated temperature. The tensile strength is generally about 515–620 MPa, yield strength about 205 MPa, and elongation approximately 40%. The nuts have good ductility and oxidation resistance in continuous operation up to 870°C. Their durability and resistance to corrosion make them best suited for parts under high stress and fluctuating temperatures in severe industrial environments.
| Specifications | DIN, ISO ,JIS ,GB, IS, BS, ASTM |
| Standard | ASTM A193 / A194, ASME SA193 / SA194 |
| Size | M2 – M100 |
| Length | 3 mm to 200 mm | Custom Sizes |
| Dimensions Standard | DIN: DIN931, 933, 934, 7991, 976, 125 ISO: ISO 4033, 4032 ASME B18.5, B18.3 |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304H | min. | 0.04 | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.10 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | – | 10.5 | – | |
| 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 | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
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Stainless Steel 304H Nuts Designed for high-stress environments, these nuts provide excellent corrosion resistance and durability. Available in sizes ranging from M6 to M36, they are ideal for chemical, petrochemical, and power generation applications.
Stainless Steel 304H Coupling Nuts Ideal for joining threaded rods, these coupling nuts offer high strength and temperature resistance. Available in sizes from M6 to M36, they are suitable for industrial applications such as piping systems and machinery assemblies.
These nuts feature a nylon insert for secure fastening and vibration resistance. Available in sizes from M6 to M24, they ensure a tight fit and prevent loosening, making them perfect for machinery and automotive applications.
Featuring integrated flanges for extra support, these SS 304H nuts provide enhanced load distribution and stability. Available in sizes from M6 to M24, they are ideal for use in heavy-duty equipment and construction projects.
Offering superior strength for heavy-duty applications, these SS 304H nuts are designed for high-pressure and high-temperature environments. Available in sizes from M6 to M36, they are perfect for boilers and heat exchangers.
These square nuts provide a large surface area for effective torque application. Available in sizes from M6 to M24, they are ideal for secure fastening in tight spaces within industrial machinery and structural applications.
Adam Stainless is committed to providing high-quality Stainless Steel 304H Nuts with consistent performance through a wide range of tests. These include hardness testing, spectro analysis, PMI, and flaring tests. We also do micro and macro tests, pitting resistance tests, and IGC tests to ensure the excellent quality of every product we deliver. Along with the above-mentioned stringent testing processes, we are giving full documentation like commercial invoices and detailed packing lists with net and gross weights, box numbers, and labels. Moreover, our legalized or attested Certificate of Origin and Third-Party Inspection Certificates make sure that there is total assurance of our commitment towards delivering superlative products and a guaranty of unforgettable customer satisfaction.
Adam Stainless’s Stainless Steel 304H Nuts find broad application in power generation, petrochemicals, and refineries. They are best suited for applications at high temperatures such as heat exchangers, pressure vessels, boilers, and piping systems. These nuts work satisfactorily in chemical processing facilities and aquatic environments, with superior resistance to oxidation and mechanical stability. 304H nuts find application in structural assemblies with alternating thermal conditions. Their ability to withstand scaling and their durability make them a choice material for industrial equipment running in high-temperature and high-pressure conditions where strength and corrosion resistance have to be maintained consistently.







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