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Hamad Fasteners is a reliable manufacturer and supplier of Stainless Steel 347H nuts, proudly located in Riyadh, Saudi Arabia. We focus on creating high-temperature, corrosion-resistant fasteners designed for tough industrial settings. Our 347H nuts are crafted from stabilized austenitic stainless steel, ensuring top-notch performance even under high temperature and pressure. Built to meet international standards like ASTM and DIN, these nuts are perfect for critical applications in the petrochemical, power, and heat treatment sectors. At Hamad Fasteners, we’re dedicated to delivering high-quality products, prompt delivery, and expert technical support throughout Saudi Arabia and the GCC region.
Our Stainless Steel 347H nuts are made from an austenitic stainless steel alloy that includes chromium (17–20%), nickel (9–13%), and columbium (niobium) for stabilization. The “H” variant features a higher carbon content (0.04–0.10%) to enhance high-temperature strength and creep resistance. These nuts boast impressive mechanical properties, such as good tensile strength, yield strength, and resistance to intergranular corrosion after welding or exposure to high temperatures. They maintain their structural integrity in environments reaching up to 870°C, making them ideal for heat-intensive applications. All our nuts are manufactured in accordance with international mechanical and dimensional standards to ensure consistent performance.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
| 347H | min. | 0.04 | – | – | – | – | 17.0 | 3.00 | 9.0 | – |
| max. | 0.10 | 2.0 | 1.00 | 0.045 | 0.030 | 19.0 | 4.00 | 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 | ||||
| 347H | 515 | 205 | 40 | 92 | 201 |
| 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 nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
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 347H frames are essential in applications requiring strenuous work in hot blistering conditions. It is widely used in chemical plants to protect equipment exposed to acidic environments and high temperatures. In aerospace applications, the 347H nut ensures secure fastening of components subjected to extreme heat and stress. Additionally, stainless steel 347H frames, which play an important role in oil and gas industries due to their resistance to sulfide pressure cracking and nuclear reactors due to their resistance to wind and high temperatures, provide durable solutions and reliable packaging in harsh industrial environments.
Stainless Steel 347H nuts are perfect for applications that involve prolonged exposure to high heat, mechanical stress, and corrosive environments. They are commonly found in refinery equipment, heat exchangers, boilers, superheaters, chemical processing plants, and high-temperature piping systems. Thanks to their resistance to intergranular corrosion and excellent creep strength, they are well-suited for pressure vessels and welded structures operating at elevated temperatures. Hamad Fasteners provides 347H nuts to clients looking for secure, high-strength fasteners that can endure thermal cycling and aggressive conditions.
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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