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Lina Fasteners is a reliable manufacturer and supplier of Hastelloy Washers based in Tunis, Tunisia. They specialize in providing high-performance fastening components designed for extremely corrosive and high-temperature industrial settings. The company prides itself on precision manufacturing, rigorous quality control, and strict adherence to international standards, ensuring that their products deliver dependable performance and a long lifespan. Known for their remarkable resistance to corrosion, pitting, and stress corrosion cracking, Hastelloy washers from Lina Fasteners excel in harsh chemical environments. With state-of-the-art production facilities, a team of skilled professionals, and efficient logistics, Lina Fasteners guarantees timely deliveries, competitive pricing, and trustworthy fastening solutions for industries such as chemical processing, petrochemical, marine, and power generation.
Hastelloy Washers are crafted from nickel-based alloys that include chromium, molybdenum, iron, and other elements tailored to specific grades. This unique composition grants them excellent resistance to both oxidizing and reducing environments. On a mechanical level, Hastelloy washers boast high tensile and yield strength, impressive toughness, and reliable ductility. They maintain their shape and structural integrity even under high stress, elevated temperatures, and extended exposure to aggressive chemicals.
| 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.
These washers are widely utilized in sectors where top-notch corrosion resistance and mechanical reliability are essential. Common applications include chemical reactors, heat exchangers, pressure vessels, flue gas desulfurization systems, and acid handling equipment. They also find use in offshore platforms, marine systems, oil and gas processing units, and pharmaceutical plants. Thanks to their exceptional durability, strength, and corrosion resistance, Hastelloy washers offer secure and long-lasting fastening solutions in the most challenging industrial and chemical environments.
We at Lina 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.
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
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