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Hamad Fasteners, located in Riyadh, Saudi Arabia, is a reliable manufacturer and supplier of top-notch industrial fastening solutions. Our Stainless Steel 304H Nuts are crafted specifically for applications that demand outstanding mechanical strength and heat resistance. With a higher carbon content than standard 304, these nuts provide enhanced performance and durability at high temperatures. Designed to meet international standards, 304H nuts are perfect for use in heat exchangers, pressure vessels, and other high-temperature equipment. At Hamad Fasteners, we ensure that every product we offer delivers exceptional quality, precision, and reliability across challenging industries like petrochemical, power generation, and thermal processing.
Our Stainless Steel 304H Nuts are made from an austenitic stainless steel alloy that includes 18–20% chromium, 8–11% nickel, and a higher carbon content (0.04–0.10%) to boost strength at elevated temperatures. These nuts typically exhibit tensile strength ranging from 520–750 MPa and yield strength between 205–310 MPa, with Brinell hardness falling between 150–220 HB. The increased carbon content enhances creep resistance, making them suitable for use in environments exceeding 500°C. 304H also offers excellent oxidation resistance and maintains structural stability under continuous thermal exposure, making it ideal for high-stress, high-temperature settings.
| 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 find extensive use in high-temperature industrial applications such as boilers, superheaters, heat exchangers, and pressure piping systems. Their elevated carbon content provides improved creep strength, making them a great choice for power plants, refineries, and petrochemical facilities. These nuts are also perfect for structural assemblies that experience thermal cycling or prolonged heat. With outstanding oxidation and corrosion resistance, SS 304H Nuts deliver a robust, durable, and dependable fastening solution for critical systems that require high mechanical strength and long-term stability in extreme service conditions.
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.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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