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SMO 254 Fasteners are top-notch, corrosion-resistant fastening solutions crafted for the toughest marine, chemical, and industrial environments. Made from SMO 254, a high-alloy austenitic stainless steel that’s rich in molybdenum and nitrogen, these fasteners stand out for their exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking, even in the most aggressive settings. Suppliers like Aria Fasteners in Hamilton, New Zealand, guarantee precise threading, consistent dimensions, and adherence to international quality standards. Whether it’s bolts, nuts, screws, or stud bolts, SMO 254 Fasteners are perfect for use in pipelines, flanges, pumps, and machinery that demand reliable, long-lasting performance.
These fasteners are primarily made up of iron, chromium, nickel, molybdenum, and nitrogen, which together provide impressive corrosion resistance, tensile strength, and mechanical durability. They excel mechanically, offering excellent yield and tensile strength, toughness, and stability under heavy loads and high temperatures. Thanks to their unique alloy composition, they perform exceptionally well in seawater, acidic, and chloride-rich environments, ensuring secure fastening and joint integrity in challenging industrial and marine applications.
| Grade | C | Mn | Si | S | Cu | Ni | Cr | N | Mo | P |
| SMO 254 | 0.02 max | 1 max | 0.8 max | 0.01 max | 0.5 – 1 | 17.5 – 18.5 | 19.5 – 20.5 | 0.18 – 0.22 | 6 – 6.5 | 0.03 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SMO 254 | 8.0 g/cm3 | 1320-1390°C | 650 | 300 | 35 % |
Standard : DIN, ASTM, BS and all International Standards
Size : 3 mm to 200 mm
Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size : M1 – M64 | #4 to 3″ | Custom Sizes
Length : M02 to M33
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.
SMO 254 fasteners are extensively applied in marine applications such as ships and offshore platforms since the material has excellent resistance to seawater corrosion. They are also essential in chemical processing industries since they can endure harsh chemicals and heat. Furthermore, these fasteners are used in heat exchangers, pulp and paper industries and other industries where high strength and corrosion resistance is needed for the long service life.
You’ll find SMO 254 Fasteners in a variety of settings, including chemical processing plants, offshore oil and gas platforms, desalination systems, power generation facilities, and marine structures. They’re perfect for securing flanges, pipelines, pumps, valves, and structural assemblies that face corrosive chemicals or chloride environments. These fasteners maintain joint integrity, resist loosening from vibrations, and offer long-lasting durability. Additionally, SMO 254 Fasteners are utilized in the pharmaceutical, food processing, and specialized industrial sectors where high-strength, corrosion-resistant, and dependable fastening solutions are crucial.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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