Harshita Stainless, which is India-based but in Dubai, is a reliable manufacturer and supplier of high-quality stainless steel components specifically designed for heavy-duty industrial use. In our range of specialty products, Stainless Steel 347 Nuts are notable for their superior mechanical strength, corrosion resistance, and improved performance at higher temperatures. Our nuts are specifically designed to satisfy the demanding needs of aerospace, power generation, chemical processing, and medical equipment industries. With a keen emphasis on quality assurance, timely shipment, and client happiness, Harshita Stainless is your trusted partner for high-performing fastening solutions that meet global engineering and safety standards.
Stainless Steel 347 Nuts consist of stabilized austenitic stainless steel, consisting chiefly of 17–19% chromium, 9–13% nickel, with a niobium (columbium) addition equivalent to at least ten times the carbon content. This alloy composition improves resistance against intergranular corrosion and carbide precipitation at high temperatures. They have tensile strength of 515–690 MPa, yield strength of about 205 MPa, and good elongation and weldability. The nuts retain mechanical properties during thermal cycling and oxidizing conditions with high durability, structural strength, and service performance in aggressive conditions.
Grade | Mn | N | P | C | S | Cr | Mo | Si | Ni | Other | |
347 | min. max | 2.00 | – | 0.045 | – 0.08 | 0.030 | 17.0 19.0 | – | 0.75 | 9.0 13.0 | Nb=10(C+N) 1.0 |
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 | 92 | 201 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
Stainless Steel 347 Nut |
IS BS ASTM |
ASTM A193 B8C |
3 mm to 200 mm |
M02 to M33 |
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A corrosion-resistant product, Stainless Steel 347 nuts are available in sizes from M6 to M64. They offer exceptional heat and oxidation resistance, ideal for high-temperature applications in aerospace and chemical processing industries.
A corrosion-resistant product, Stainless Steel 347 coupling nuts come in sizes from M6 to M36. They are designed to connect two male threads securely, providing high strength and stability in high-temperature and harsh industrial environments.
A corrosion-resistant product, Stainless Steel 347 nylon insert nuts, or lock nuts, are available in sizes from M3 to M36. The nylon insert helps prevent loosening under vibration, offering reliable performance in high-temperature applications.
A corrosion-resistant product, Stainless Steel 347 flange hex nuts feature an integrated flange and are available in sizes from M5 to M20. They provide enhanced load distribution and stability in high-temperature and corrosive environments.
A corrosion-resistant product, Stainless Steel 347 heavy hex nuts are available in sizes from M10 to M48. Their increased thickness and strength make them suitable for heavy-duty and high-temperature applications requiring robust and secure fastening.
A corrosion-resistant product, Stainless Steel 347 square nuts offer a larger contact surface and come in sizes from M6 to M30. They are ideal for high-temperature and heavy clamping applications, providing stability and durability.
We provide our customer with a high-quality stainless Steel 347 Nut with full transparency. All the products carry necessary documentations, which are commercial invoice packing list fumigation certificate; heat treatment chart of a test report from NABL-approved laboratory’s We also give EN10204 /3.1-b material test, PMI, and a report on radiography of 100%, along with our Third Party inspection report, to enable full documentation by which client can achieve complete satisfaction.
Stainless Steel 347 Nuts are extensively utilized in processes that require resistance to high temperature, oxidation, and thermal stress. They are used in industries like aerospace, chemical processing, power generation, and pharmaceutical production in reactor vessels, exhaust system components, heat exchangers, and components of boilers. They are also perfect to be used in furnace components, heating elements, and air vents because of their steadiness in changing temperatures. In medical and electrical applications, they exhibit long-term reliability and structural stability. Their intergranular corrosion resistance provides reliable fastening in hostile environments, which makes them critical for high-performance and safety-relevant systems.
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