From the heart of Kinshasa, Congo, Okoye Nickel Alloys proudly stands as a trusted manufacturer and supplier of high-performance components engineered for the most demanding environments. Our specialty lies in producing superior Hastelloy screws, precision-crafted for industries where failure is not an option. We understand that true reliability begins with the smallest part, which is why we dedicate ourselves to providing fasteners that offer unwavering strength and exceptional corrosion resistance, directly supporting the critical work of our clients across the region and beyond.
These screws are forged from advanced nickel-chromium-molybdenum alloys, a composition that grants them a remarkable immunity to a wide range of corrosive threats, including harsh acids and chloride-induced stress corrosion cracking. They maintain exceptional mechanical integrity, boasting high tensile strength and excellent creep resistance, even when subjected to extreme temperatures and pressures. This combination ensures they won’t easily warp, stretch, or succumb under load, providing a dependable and lasting hold in situations where ordinary steel fasteners would quickly deteriorate.
| 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 % |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Hastelloy Screw in Kinshasa, Congo, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Congo, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
You’ll find our Hastelloy screws hard at work in the most challenging industrial settings. They are essential in chemical processing plants, securing equipment that handles aggressive acids, and within oil and gas installations, where they withstand sour gas and seawater corrosion. The aerospace and pharmaceutical industries also rely on their purity and resilience for critical assemblies. Essentially, wherever severe corrosion and high temperatures are a constant challenge, our screws provide the crucial, reliable fastening needed to ensure operational safety, longevity, and uninterrupted performance.
