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Rinku Fasteners, based in Kolkata, India, is a leading manufacturer and supplier of premium Hastelloy Screws, serving diverse industrial sectors with precision and reliability. Renowned for its commitment to quality, the company produces screws that combine strength, corrosion resistance, and durability, meeting both domestic and international standards. Each screw is carefully crafted from high-grade materials using advanced manufacturing techniques to ensure consistent performance even in demanding environments. With a focus on customer satisfaction, timely delivery, and technical support, Rinku Fasteners has earned a reputation for providing reliable fastening solutions that perform exceptionally in chemical, marine, and high-temperature applications.
Hastelloy Screws are primarily made from nickel-based alloys, enriched with molybdenum, iron, cobalt, and small amounts of copper and tungsten, which enhance corrosion resistance and mechanical strength. These screws exhibit exceptional resistance to oxidizing and reducing environments, including strong acids and high-temperature conditions. They offer high tensile strength, good toughness, and excellent durability under stress, making them ideal for challenging applications. Their ability to withstand thermal cycling, pitting, and crevice corrosion ensures long-lasting performance in aggressive chemical and industrial environments, providing both reliability and safety in critical fastening applications.
| Standard | IS, ANSI, ASTM DIN, ISO, JIS, GB, ASME, BS, UNI and all International Standards |
|---|---|
| Threads: | BSF, UNF METRIC, UNC, BSW or as required |
| Standard | ANSI – American National Standards Institute
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| Fasteners/ Bolts Size | M10, M4, M16, M36 M2.5, M6, M30, M12, M8, M14, M2, M3, M20, M24, M5 to M160 |
| Length | 3 mm to 200 mm |
| Head drive: | Phillips, Slotted, Phillips/Slot, Six-Lobe etc |
| Test Certificate | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Finishing | Zinc white, (yellow, black, blue), black oxide, Dacroment, Geometry, plated zinc-nickel, anodizing, nickel plated, Stainless steel: Passivated Self-Colour, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, Stainless Steel, some special one like DACROMET and Mechanically Applied coating |
| raw materials of Source | JSPL, Usha Martin, Tata Steel, Mukund Steel, RINL, Dhamm Steel etc. |
| Form | Square, Hex, Threading as per Gauge, Round Etc. |
| Process of Production | M2-M24: Cold Froging, hot forging M24-M100, machining and CNC for Customized connecting element |
| Surface Coating |
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| Packing | IN BULK: pallet, canton, carton / Small Boxs / pallet or customer request |
| Grade | C | Mn | Si | Co | S | Ni | Cr | Fe | Mo | W | V | P |
| Hastelloy Fasteners | 0.010 max | 1.0 max | 0.08 max | 2.5 max | 0.03 max | Bal | 14.5 – 16.5 | 4 – 7 | 15 – 17 | 3 – 4.5 | 0.35 max | 0.04 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy Fasteners | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
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.
Hastelloy Screws are widely used in industries where corrosion resistance and durability are critical. They are commonly applied in chemical processing plants, marine environments, power generation, petrochemical facilities, and aerospace engineering. These screws perform exceptionally in high-temperature and acidic environments, making them ideal for reactors, heat exchangers, pumps, and valves. They are also used in pharmaceutical, desalination, and offshore oil and gas equipment due to their ability to maintain structural integrity under harsh conditions. Their reliability in aggressive environments makes them a preferred choice for engineers and manufacturers seeking long-lasting, high-performance fastening solutions.
We take extra care while packing the Hastelloy screws that we offer to our clients at Rinku Fasteners. Every screw is covered with protective material to ensure that they do not get damaged, rust or get contaminated when in transit. We offer reliable packaging in the form of cartons and also have special packaging that meets your requirements. Our products are packed and labeled properly to ensure that identification and handling is done efficiently to show our readiness to provide high quality products in their best state.
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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