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At Hazlewood Fasteners in Canberra, we engineer fastening solutions built for the extremes. Our SMO 254 stud bolts are crafted from a super austenitic stainless steel alloy designed to perform in the harshest marine, chemical, and industrial environments. With exceptional resistance to pitting, crevice corrosion, and chloride-induced cracking, these bolts stand firm where conventional stainless steels fail. Hazlewood Fasteners’ SMO 254 stud bolts embody precision, endurance, and strength—crafted to secure critical assemblies under relentless heat, pressure, and chemical attack. They are the definitive choice for engineers who demand unwavering reliability and performance in the toughest operating conditions.
SMO 254 stud bolts consist of an advanced alloy containing approximately 20% chromium, 18% nickel, 6% molybdenum, and nitrogen, engineered for extreme corrosion resistance and mechanical strength. This composition delivers superior protection against chlorides, acids, and seawater, providing outstanding tensile and yield strength. These bolts maintain stability under high stress, vibration, and temperature, while resisting pitting and crevice corrosion. With high ductility, fatigue strength, and oxidation resistance, SMO 254 stud bolts guarantee enduring performance and structural integrity in aggressive marine and industrial environments.
| Grade | C | Ni | Si | N | S | Mn | P | Cr | Ce | Fe | |
| SS 254 SMO | min. | – | 17.5 | – | 0.18 | – | – | – | 19.5 | 0.03 | Balance |
| max. | 0.02 | 18.5 | 0.08 | 0.22 | 0.01 | 1.00 | 0.03 | 20.5 | 0.08 | ||
| Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| SS 254 SMO | 650 | 35 | 300 | 50 | 270 |
Standard ASTM A193, A320 / ASME SA193, SA320
Dimensions DIN / ISO / ASME / ANSI / UNI / BS / BIS / SAE, etc.
Threads UNC, UNF, UNEF, UN, Coarse, Fine & BSW.
Type All Thread, Double End, Single End
Size Metric M1 to M152 & Imperial #0 to 8″ Bolt Diameter
Length Bolts upto 2500mm shank length.
Construction Hot Forged, Cold Forged, Bar Stock Machined
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 stud bolts are the trusted choice for desalination plants, offshore oil rigs, chemical processing units, heat exchangers, and marine engineering systems. Their unmatched resistance to chloride and acidic corrosion makes them indispensable in industries exposed to seawater, brine, and harsh chemical media. Hazlewood Fasteners’ SMO 254 stud bolts provide secure, long-lasting fastening under high pressure and temperature conditions, ensuring assemblies stay intact even in extreme environments. Engineered for strength, stability, and corrosion defense, these bolts are vital for industrial and marine applications where failure is not an option and durability defines performance.
At Hazlewood Fasteners, we pack our SMO 254 stud bolts in a manner that guarantees they get to the client in the best condition possible. Every stud bolt is covered and sealed in durable, moisture proof bags to ensure that they are not affected by other materials or moisture. Proper labeling helps in identification and management of items in a proper manner. Our packaging procedures ensure that the stud bolts are protected to retain their high quality and are readily available for use, a factor that is in line with our mission of providing quality products and excellent services.
Hazlewood Fasteners is a leading manufacturer and supplier of high-quality fasteners in Canberra, Australia, with over 8 years of experience serving global industries.
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