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Punit Fasteners is a leading manufacturer, supplier and exporter based in Delhi, India, specializing in high-quality stainless steel 347H washers. We are dedicated to maintaining strict industry standards in durability and reliability throughout our manufacturing and packaging processes. Our range of sizes is designed to meet diverse application needs across various industries, ensuring compatibility and efficiency. We are committed to providing reliable solutions for all your fastening requirements, making us a preferred partner in the region.
Punit Fasteners, a Delhi, India-based company, is a leading manufacturer and supplier of high-performance Stainless Steel 347H Washers for industries seeking strength, reliability, and thermal resistance. Precision-made 347H washers, which can withstand severe temperature and corrosive environment conditions, are ideal for use in mission-critical industrial environments. Adhering to the highest standards of quality, we offer products of international standards supported by comprehensive documentation and certification. Punit Fasteners supplies robust fastening parts relied upon across industries such as chemical processing, aero-space, oil & gas, and power generation—providing long-life performance and efficiency in operation in severe conditions.
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 8xC – 1.10 | 9.00 – 13.00 | 63.72 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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SS 347H Washer Specifications |
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| Specifications | : | ASTM A193 ASME SA193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | M02 to M33 |
| Size | : | 3 mm to 200 mm |
| Type | : | Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring |
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 Washers consist of iron, 17–19% chromium, 9–13% nickel, and columbium (niobium) with controlled amount of carbon, manganese, and silicon. The niobium stabilizes the alloy and provides outstanding resistance to intergranular corrosion, especially after exposure to high temperature up to 900°C. These washers have high tensile strength, good resistance to creep, and excellent mechanical stability. They have structural integrity under long-term thermal stress, providing low deformation, superior oxidation resistance, and compatibility for use in high-pressure environments. Their strength makes them perfectly suitable for extreme industrial and structural use.
Stainless Steel 347H Washers find crucial applications in high corrosion resistance and operation at elevated temperature conditions in industries. In chemical processing facilities, they shield equipment against acidic and oxidizing conditions. In aerospace applications, they provide safe assembly of components that are heat-exposed. Oil and gas refineries also have a use for these washers, which provide high resistance to sulfide stress corrosion cracking. In nuclear reactors, 347H washers are radiation– and thermal stress-resistant, guaranteeing safety and dependability. Their corrosive resistance, mechanical strength, and durability make them an excellent choice in aggressive industrial applications necessitating reliable fastening solutions.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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