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Mazin Fasteners is a leading manufacturer and supplier of Hastelloy Washers, proudly based in Muscat, Oman. We specialize in providing high-performance fastening components designed for the toughest industrial settings. Renowned for our precision engineering and unwavering quality standards, we produce washers that guarantee durability, corrosion resistance, and precise dimensions. With state-of-the-art manufacturing facilities and a strict quality control process, Mazin Fasteners caters to various industries, including chemical processing, petrochemical, oil and gas, power generation, and marine applications. Our dedication to timely delivery, competitive pricing, and dependable technical support makes us a trusted partner for essential Hastelloy washer solutions, both in Oman and beyond.
Hastelloy Washers are crafted from nickel-based alloys that include significant amounts of molybdenum, iron, and trace elements of cobalt and tungsten, depending on the specific grade. This unique composition grants them outstanding resistance to corrosion, especially in both oxidizing and reducing chemical environments. On the mechanical side, Hastelloy washers boast high tensile and yield strength, remarkable toughness, and good ductility. They remain stable even at elevated temperatures and are resistant to stress corrosion cracking, pitting, and crevice corrosion, making them perfect for reliable performance in aggressive chemical, high-temperature, and marine service applications.
| 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 Washers find extensive use in industries that demand exceptional corrosion resistance and mechanical reliability. They’re commonly utilized in chemical processing equipment, petrochemical plants, heat exchangers, and reactors that face highly corrosive conditions. These washers are also ideal for marine applications, offshore structures, power generation, and desalination plants. Additionally, they play a vital role in the pharmaceutical, food processing, and environmental sectors, ensuring safety and efficiency in various challenging environments.
We at Mazin Fasteners make sure that our Hastelloy washers are packed with great care and precaution. The washers are packed in groups of one each in individual protective covers to avoid scratching, rusting or getting contaminated in the process. Some of our packaging products include; cartons that are highly durable and packaging solutions that are made to order. They help in easy identification and packing to enhance our reputation of delivering quality products in good condition.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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