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At Hazlewood Fasteners in Canberra, we produce nuts built for high-temperature resilience, corrosion resistance, and long-term reliability. Our stainless steel 304H nuts are crafted from high-carbon austenitic stainless steel, engineered to maintain mechanical strength and stability under elevated temperatures. Designed for secure, vibration-resistant fastening, these nuts ensure assemblies perform flawlessly in demanding industrial, chemical, and power generation environments. Hazlewood Fasteners’ 304H nuts go beyond ordinary connectors—they are precision-engineered components that anchor critical assemblies with confidence, delivering exceptional durability, corrosion resistance, and mechanical integrity where high-temperature performance cannot be compromised.
Stainless steel 304H nuts are manufactured from austenitic stainless steel containing approximately 18% chromium, 8–10% nickel, and elevated carbon content to enhance tensile strength at high temperatures. This composition provides excellent corrosion resistance, fatigue strength, and dimensional stability in harsh environments. 304H nuts maintain mechanical integrity under thermal cycling, vibration, and prolonged stress. Engineered for demanding applications, they combine toughness, ductility, and high-temperature reliability, offering secure fastening and long-term performance in industrial, chemical, marine, and power-generation applications.
| 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 |
| 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 |
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 304H nuts are widely used in boilers, heat exchangers, chemical processing equipment, power plants, and high-temperature piping systems. Their high-carbon austenitic composition ensures strength, dimensional stability, and corrosion resistance in environments with elevated heat and thermal cycling. These nuts are ideal for industrial machinery, structural assemblies, and high-temperature marine applications where reliability and mechanical integrity are critical. Hazlewood Fasteners’ 304H nuts provide vibration-resistant, secure fastening, maintaining assembly integrity over time. Engineered for strength, durability, and high-temperature performance, 304H nuts are trusted components for engineers and fabricators tackling demanding industrial and high-temperature applications.
We ensure that we have complete documentation for our Stainless Steel 304H nuts. Commercial invoices, packaging documents, heat treatment charts, quality control charts, and NABL-approved reports on laboratory testing are included. Our commitment to quality extends to issuing various test certificates and our 304H products, such as MTC according to EN 10204/3.1b, PMI test certificate, and 100% radiography test report. To further strengthen customer satisfaction, we offer third-party inspection certificates, which prove our fruit’s quality and reliability for various applications and durability.
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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