Vinit Stainless is a trusted supplier and manufacturer of high-performance fastening solutions such as corrosion-resistant SMO 254 fasteners. Built to withstand use in corrosive and chloride-laden conditions, SMO 254 fasteners have excellent mechanical strength and exceptional pitting and crevice corrosion resistance. Produced in Chennai with cutting edge machinery and strict quality assurance processes in line with international standards. Vinit Stainless provides SMO 254 screws, bolts, washers, and nuts to key industries like oil & gas, marine, desalination, and chemical processing, which require performance and durability for system safety and long-term reliability.
SMO 254 fasteners consist of about 20% chromium, 18% nickel, 6% molybdenum, and nitrogen (0.18–0.22%), which provide a high PREN (Pitting Resistance Equivalent Number) of more than 42. The fasteners exhibit high strength and ductility with tensile strength ≥650 MPa and yield strength ≥300 MPa. SMO 254 fasteners support mechanical properties in high-temperature and corrosive conditions. Their high fatigue strength and stress corrosion cracking resistance make them suitable for applications involving high performance with the need for both structural integrity as well as resistance against chloride-induced damage.
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
| 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 % |
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SMO 254 nuts offer exceptional corrosion resistance in highly aggressive environments, including seawater. Available in sizes ranging from M6 to M30 and various dimensions, they ensure secure fastening with high strength and durability.
SMO 254 Stud Bolts provide superior corrosion resistance against chloride-induced stress. They are commonly available in lengths from 50 mm to 300 mm and diameters from M6 to M30, designed for high-pressure and high-temperature applications.
SMO 254 Bolts deliver excellent resistance to pitting and crevice corrosion. Standard sizes range from M6 to M30, with lengths from 20 mm to 200 mm. These bolts are ideal for demanding environments requiring high strength and durability.
SMO 254 threaded rods offer outstanding resistance to corrosion and high temperatures. Typically available in diameters from M6 to M30 and lengths up to 3 meters, they are used for various construction and industrial applications.
SMO 254 screws provide exceptional corrosion resistance and are used in marine and chemical environments. Sizes generally range from M3 to M20, with lengths from 10 mm to 150 mm, suitable for precise fastening needs.
SMO 254 washers ensure high corrosion resistance and are used to distribute load and prevent damage. They are available in sizes from M6 to M30, with thicknesses typically ranging from 1 mm to 5 mm, suitable for various applications.
SMO 254 fasteners are widely utilized in situations where there is the need for mechanical strength as well as superior corrosion protection. Typical uses involve offshore oil platforms, seawater piping systems, desalination plant equipment, marine fittings, chemical reactors, and flue gas treatment systems. These fasteners are suitable for building parts in corrosive or high-salinity environments, i.e., in the petrochemical, shipbuilding, pharmaceutical, and pulp & paper industries. SMO254 fasteners are especially useful in underwater conditions due to their pitting and crevice corrosion resistance. SMO 254 fasteners provide structural integrity, extended service life, and lower maintenance in the most hostile industrial conditions.
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