Khaleed Stainless stands out as a top manufacturer and supplier of SMO 254 Bolts in Riyadh, Saudi Arabia, providing top-notch fastening solutions for industries that face highly corrosive environments. SMO 254 (UNS S31254) is a high-alloy austenitic stainless steel specifically designed for applications that demand outstanding resistance to pitting, crevice, and chloride stress corrosion cracking. Thanks to its unique blend of strength, toughness, and durability, SMO 254 Bolts are a go-to choice in challenging sectors like marine, chemical, oil & gas, and desalination plants, ensuring they deliver long-lasting performance and reliability even in tough operating conditions.
SMO 254 Bolts are made up of around 20% chromium, 18% nickel, 6% molybdenum, along with nitrogen additions to boost strength and corrosion resistance. This specific composition gives it a high pitting resistance equivalent number (PREN > 42), making it particularly effective in aggressive chloride environments. In terms of mechanical properties, these bolts boast a tensile strength of about 650 MPa, a yield strength of 300 MPa, and an elongation of 35–40%, which guarantees exceptional strength, ductility, and toughness, even at higher temperatures.
| Specifications of 254 SMO Fasteners | ASTM A479 & ASME SA479 |
| Standard of 254 SMO Fasteners | DIN, ASTM, BS and all International Standards |
| Length of 254 SMO Fasteners | 3 mm to 200 mm |
| 254 SMO Nuts Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| 254 SMO Bolt / Screw Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| 254 SMO Machine Screws Size | M1.6 – M12 |
| 254 SMO Washers Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Stainless Steel Grades | SMO 254 |
| 254 SMO Fasteners Type | Socket Screw, Hex Set Screw, Cap Screw, Machine Screw, Wing Screw, Spring Washers, Washers, Studs, Marine Anchors, Anchors, Hexagon Nut,U- Bolts, Anchor Bolt, Mushroom Head Square Neck Bolts, J Bolts,Eye Bolt,Structural Bolts, Bolts, Nuts, Sockets, Screws, Allen Cap screw, Nut, Hex Coupling Nut, Hex Nut, Square Nut, Hex Domed Cap Nuts, Hex Head Bolts, Stud Bolts, Socket Hexagon Head Screw, Pan Head Screw, Socket Head Cap Screw, Wing Screw, T-Head Bolts, Foundation Bolts,Screw, Studs |
| SMO 254 | Ni | C | Mo | Mn | Si | Fe | Cu | S | P | Cr |
| 17.5 – 18.5 | 0.02 max | 6 – 6.5 | 1 max | 0.8 max | – | 0.5 – 1 | 0.01 max | 0.03 max | 19.5 – 20.5 |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 8.0 g/cm3 | 1320-1390 ℃ | 300 | 650 | 35 % |
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SMO 254 bolts are high-performance fasteners made from super duplex stainless steel, offering exceptional corrosion resistance and strength. Ideal for marine, chemical, and high-temperature applications, they ensure durability and reliability.
F44 SMO 254 bolts are high-performance fasteners made from super duplex stainless steel grade F44. They offer superior corrosion resistance and strength, suitable for marine, chemical, and high-temperature applications.
ASTM A479 UNS S31254 bolts are high-strength fasteners made from super duplex stainless steel. They provide excellent corrosion resistance and durability, suitable for demanding applications in marine, chemical, and high-temperature environments.
UNS S31254 hex bolts are high-strength fasteners made from super duplex stainless steel. They feature a hexagonal head for secure tightening and offer excellent corrosion resistance in demanding marine and industrial applications.
F44 SMO 254 hex bolts are high-performance fasteners made from super duplex stainless steel F44. They feature a hexagonal head, offering superior corrosion resistance and strength for marine and chemical applications.
1.4547 bolts are made from super duplex stainless steel, offering exceptional corrosion resistance and strength. Ideal for harsh environments like marine and chemical industries, they provide durability and high performance.
Our quality control team conducts very intensive destructive and non-destructive tests after manufacture. Bolt efficiency and reliability have been guaranteed utilizing advanced tools and techniques on SMO 254 bolts. These quality controls ensure that each bolt meets the highest applicable standards for industrial applications. Once approved bolts, we pack them up tightly and in using suitable materials for safety in transit. We ensure smooth and timely delivery for our valued customers without any delay. Besides, we provide all the required documentation at the time of delivery for the customer’s convenience, to further build trust and transparency.
SMO 254 bolts are widely used in environments requiring high corrosion resistance such as marine applications, chemical processing and offshore installations. They are ideal for components exposed to seawater, brine and harsh chemicals. Common applications include pumps, valves and fittings in petrochemical industries as well as structural components in marine and coastal environments. Their durability and resistance to pitting and crevice corrosion make them suitable for high-temperature and high-pressure applications where reliability and longevity are crucial.
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