Midland, UK-based Weston Stainless is a reliable manufacturer of high-grade stainless steel products, offering industrial–grade solutions with high quality and durability. Its Stainless Steel 347 Nuts are produced using columbium-stabilized austenitic stainless steel and are highly resistant to intergranular corrosion, oxidation, and high-temperature environments. Produced in hex, square, coupling, and heavy hex forms, these nuts provide firm fastening in harsh conditions. SS 347 nuts offer high mechanical strength, weldability, and long-term performance, and thus are perfect for use in high-temperature–stability, corrosion-resistant applications, and in situations of harsh operating conditions.
Stainless Steel 347 Nuts consist of 17-19% chromium, 9-13% nickel, and columbium (niobium) for improved stabilization against carbide precipitation. SS 347 nuts possess tensile strength of 515 MPa, yield strength of 205 MPa, and elongation of 40%. Their hardness level is around 95 HRB. Physically, SS 347 is a density of 7.9 g/cm³, a melting point of 1400°C, and thermal conductivity of 16.3 W/m-K, providing tremendous heat resistance, strength, and mechanical stability for high-stress applications.
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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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 used in applications requiring high-temperature stability and corrosion resistance. Such nuts are also used in medical devices, electrical systems, aerospace, and the like, due to their capacity to withstand severe temperatures and their resistance to carbide precipitation. It is also extensively used in the furnace components, air vents, and heating valves because of excellent oxidation resistance. These nuts provide dependable performance in the thermal cycling environment to ensure strength and structural integrity even under toughest conditions.
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