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SMO 254 Bolts are high-strength, corrosion-resistant fasteners engineered for extreme marine, chemical, and industrial applications. Manufactured from SMO 254, a high-alloy austenitic stainless steel enriched with molybdenum and nitrogen, these bolts provide outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Suppliers in Hamilton, New Zealand, such as Aria Fasteners, ensure precise threading, uniform dimensions, and strict compliance with international quality standards. SMO 254 Bolts are ideal for securing flanges, pipelines, pumps, pressure vessels, and machinery requiring long-term reliability in harsh or chloride-rich environments.
SMO 254 Bolts are composed primarily of iron, chromium, nickel, molybdenum, and nitrogen, enhancing corrosion resistance, tensile strength, and mechanical durability. Mechanically, they offer high yield and tensile strength, toughness, and dimensional stability under heavy loads and elevated temperatures. Their alloy composition ensures long-term performance in seawater, chemical, and high-temperature industrial environments, maintaining secure fastening and joint integrity in demanding applications.
| 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 % |
| 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 |
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 bolts are widely employed in marine applications such as in ships and offshore platforms because of its excellent resistance to corrosion in marine environment. They find application in chemical processing industries because they can handle aggressive chemicals and high temperatures. Furthermore, these bolts are used in heat exchangers, pulp and paper industries and other industries where high tensile strength and high endurance is required for durability and reliability.
SMO 254 Bolts are widely used in chemical processing plants, offshore oil and gas platforms, desalination systems, power generation facilities, and marine installations. They are ideal for securing flanges, pipelines, pumps, valves, and structural components exposed to corrosive chemicals or chloride-rich conditions. These bolts maintain joint integrity, resist loosening under vibration, and provide long-lasting durability. SMO 254 Bolts are also employed in pharmaceutical, food processing, and specialized industrial applications where high-strength, corrosion-resistant, and reliable fastening solutions are critical.
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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