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Rinku Fasteners is a leading manufacturer and supplier of Stainless Steel 317/317L Nuts. Serving buyers globally, we provide nuts in various standards and offer customized specifications to meet the diverse requirements of our valued customers. With a focus on quality and precision, we ensure that our Stainless Steel 317/317L Nuts deliver reliable performance for various applications.
Stainless Steel 317/317L nuts are composed of iron, chromium (18-20%), nickel (11-15%), molybdenum (3-4%), and low carbon content (≤0.03% for 317L). They offer excellent corrosion resistance, high strength, and superior durability, making them ideal for chemical processing, petrochemical, and marine environments. The lower carbon content in 317L enhances weldability and reduces the risk of carbide precipitation. These nuts also resist pitting and crevice corrosion, ensuring long-term reliability in harsh conditions.
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | N |
| SS 317 | 0.08 max. | 2.00 max. | 1.00 max. | 0.045 max. | 0.03 max. | 18.0 – 20.0 | 11.0 – 14.0 | 3.0 – 4.0 | – |
| SS 317L | 0.03 max. | 2.00 max. | 0.75 max. | 0.045 max. | 0.03 max. | 18.0 – 20.0 | 11.0 – 15.0 | 3.0 – 4.0 | 0.1 |
| 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 | ||||
| 317 | 620 MPa | 275 MPa | 45% | 85 | 193 |
| 317L | 595 MPa | 260 MPa | 55% | 85 | 200 |
|
Material |
Specification |
Standards |
Size
|
Length |
|
Stainless Steel 317 / 317L Nuts
|
IS
BS
ASTM
|
ASTM / ASME – A/ SA 193 |
3 mm
to
200 mm
|
M02 to M33
|
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 317/317L nuts are extensively used in chemical and petrochemical industries, power generation, and food processing due to their superior corrosion resistance and strength. They are ideal for marine environments, handling acetic and citric acids, and in equipment exposed to chloride environments. Their low carbon content minimizes carbide precipitation during welding, enhancing durability and reliability in harsh conditions. These nuts are also used in pharmaceuticals, pulp and paper industries, and oil and gas applications, ensuring secure and durable fastening.
We ensure rigorous quality inspections for all materials before delivery. Tests include Micro and Macro, Flaring, Pitting Resistance, Intergranular Corrosion (IGC), Hardness, Chemical Analysis (Spectro Analysis), and Positive Material Identification (PMI). Additionally, we provide comprehensive documentation such as HS-coded commercial invoices, packing lists with net and gross weights, box numbers, labels, and a Certificate of Origin. A Guarantee Letter and third-party inspection certificates are also available to ensure complete client satisfaction.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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