Adam Stainless is proud to manufacture and supply top-notch SMO 254 bolts right from Canberra, Australia. These bolts are designed for exceptional strength and remarkable resistance to corrosion. Each bolt is crafted with precision to meet international quality standards, ensuring they provide reliable fastening even in the toughest industrial settings. With their impressive dimensional accuracy and smooth finish, SMO 254 bolts from Adam Stainless guarantee secure, long-lasting connections that are vital for the performance of piping, machinery, and structural systems.
Made from a super austenitic stainless steel alloy, these bolts contain about 20% chromium, 18% nickel, 6% molybdenum, and 0.2% nitrogen. This unique blend gives them outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in environments rich in chlorides and oxidizing agents. On the mechanical side, these bolts typically boast tensile strengths around 690 MPa and yield strengths close to 310 MPa, striking a perfect balance between toughness and excellent ductility for heavy-duty applications.
| 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 utilized in offshore oil and gas, marine, chemical processing, and desalination industries. They are perfect for securing equipment that faces exposure to seawater, acids, and other harsh chemicals. These bolts provide strong, corrosion-resistant fastening solutions that minimize maintenance needs and enhance safety in critical infrastructure. With Adam Stainless’s SMO 254 bolts, you can count on reliable performance even in extreme conditions, ensuring long-term operational reliability.







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