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Pengkumta Fasteners, a well-respected manufacturer and supplier located in Bangkok, Thailand, specializes in high-quality SMO 254 Stud Bolts that are engineered to perform exceptionally well in harsh and corrosive environments. Made from 6Mo austenitic stainless steel, also known as SMO 254, these stud bolts are crafted to provide remarkable strength, toughness, and resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. With a commitment to precision manufacturing, stringent quality standards, and top-notch finishing, Pengkumta guarantees that SMO 254 Stud Bolts are the ideal choice for industries like marine, chemical processing, oil and gas, and desalination plants, where durability and reliability are absolutely essential.
The composition of SMO 254 Stud Bolts includes chromium (20%), nickel (18%), molybdenum (6%), nitrogen (0.2%), and a low carbon content, which together give them outstanding resistance to aggressive environments. They boast a minimum tensile strength of 650 MPa and a yield strength of about 300 MPa, along with excellent ductility and toughness, even in sub-zero temperatures. This unique chemical makeup ensures they can withstand chlorides, acids, and seawater corrosion with ease. Thanks to their superior mechanical properties and corrosion resistance, SMO 254 Stud Bolts are a fantastic option for critical fastening applications in extreme conditions.
| 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.
These bolts are widely utilized in situations where standard stainless steels just won’t cut it. You’ll often find them on offshore oil and gas platforms, in subsea equipment, and in pipelines that are exposed to seawater. In the chemical processing sector, they’re essential for reactors, heat exchangers, and tanks that handle acidic and chloride-rich solutions. Desalination plants depend on these bolts for reliable long-term performance in brine environments, while the pulp and paper industry uses them in bleaching equipment and chemical handling systems. Their unmatched corrosion resistance, paired with high mechanical strength, ensures that they provide dependable fastening solutions even in the toughest environments.
At Pengkumta 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.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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