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MUKAU FASTENERS, located in Kinshasa, Congo, stands out as a top manufacturer and supplier of high-performance Hastelloy Stud Bolts. These bolts are crafted to deliver outstanding corrosion resistance, strength, and durability, making them perfect for tough industrial settings. Made from a specialized nickel-molybdenum-chromium alloy, they ensure reliable fastening and mechanical stability across various applications, including chemical, petrochemical, marine, and aerospace sectors. Designed to endure both oxidizing and reducing conditions, as well as high temperatures and corrosive environments, MUKAU FASTENERS is committed to upholding international quality standards, providing stud bolts that guarantee structural integrity, secure jointing, and long-lasting performance in critical engineering and industrial tasks.
Hastelloy Stud Bolts mainly consist of nickel (57–63%), molybdenum (15–17%), and chromium (15–17%), along with trace amounts of iron, cobalt, and tungsten. They boast impressive tensile strengths between 690–830 MPa and yield strengths ranging from 275–380 MPa. These bolts are known for their excellent hardness, ductility, and creep resistance, along with remarkable corrosion resistance in both oxidizing and reducing environments, as well as highly acidic conditions, ensuring they remain reliable even under extreme temperatures and chemically aggressive situations.
| Specifications | ASTM B574 / ASME SB574 |
|---|---|
| Fasteners size | Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes Machine Screws Size : M1.6 – M12 Self Tapping Screw Size : No.2 – No. 14 |
| Fasteners Length | 3 mm to 200 mm |
| Fastener Threads | UNF, BSW, BSF, METRIC, UNC or as required |
| Standard of High Nickel Alloy Fasteners | DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard Stud Bolt length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 Hex nuts |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Surface Coating | Ptfe Coated High Nickel Alloy Fasteners Phosphate Coating Teflon Coating Zinc Coating Hot Dipped Galvanizing Coating Cadmium Coating Xylon Coating |
| Fasteners Finishing | High Nickel Alloy : Self-Colour, Passivated, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), High Nickel Alloy, Sherardized, some special one like DACROMET Geometry and Mechanically Applied coating ,Dacroment, nickel plated, anodizing, plated zinc-nickel Zinc (blue, black, yellow, white), black oxide. |
| 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 Stud Bolts find extensive use in the chemical and petrochemical industries, particularly in reactors, heat exchangers, pressure vessels, and piping systems that come into contact with acids, chlorides, and other corrosive substances. Their seawater resistance makes them ideal for marine engineering, desalination plants, and offshore platforms. Additionally, these bolts are utilized in power generation, pharmaceuticals, and aerospace industries, providing secure fastening, structural stability, and long-term reliability in high-stress, high-temperature, and corrosive environments. This makes them vital components for critical industrial and engineering assemblies.
Hastelloy stud bolts are used in different high performance related applications and Mukau Fasteners is providing it. In chemical processing they are able to manage exposure to aggressive chemicals and acids well. In aerospace, they offer reliable means of fastening in applications characterized by high temperature and pressure. In oil and gas industries, they protect against corrosive agents and severe conditions. Also, Hastelloy stud bolts are applied in power generation and marine industries due to their high strength and durability in harsh environments.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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