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MUKAU FASTENERS stands out as a leading manufacturer and supplier in Kinshasa, Congo, specializing in top-notch SMO 254 Washers. These washers are engineered for exceptional corrosion resistance, strength, and durability, making them perfect for the toughest industrial and marine settings. Made from high-alloy austenitic stainless steel, they excel at resisting pitting, crevice corrosion, and stress corrosion cracking, ensuring reliable load distribution and secure fastening in critical applications. MUKAU FASTENERS is committed to precision manufacturing and adheres to international standards, providing SMO 254 Washers that are ideal for chemical processing, petrochemical, offshore, marine, and high-performance machinery, where long-lasting reliability and mechanical integrity are crucial.
SMO 254 Washers are crafted from a high-performance austenitic stainless steel alloy that includes around 20% chromium, 18% nickel, 6–7% molybdenum, and 0.2–0.3% nitrogen. They boast a tensile strength ranging from 750 to 900 MPa, along with excellent yield strength, toughness, and remarkable resistance to pitting, crevice, and stress corrosion cracking. This alloy ensures dimensional stability and mechanical integrity, delivering reliable performance even in high-chloride, high-temperature, and chemically aggressive environments. These washers are designed to provide uniform load distribution, prevent surface damage, and guarantee secure fastening in critical industrial and marine applications.
| Grade | Ni | C | Mo | Mn | Si | F | Cu | S | P | Cr |
| SMO 254 | 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 |
| Element | Density | Melting Point | Yield Strength (0.2%Offset | Tensile Strength | Elongation |
| SMO 254 | 8.0 g/cm3 | 1320-1390 ℃ | 300 | 650 | 35 % |
Standard ASTM A182, A479 / ASME SA182, SA479
Dimensions DIN 125/127, ISO 7089/7090, ASME B18.22.1
Type Cold Forged, Hot Forged, Bar Stock Machined, Bar Stock Milling
Size M6-M64
Grade SMO 254 F44 UNS (S31254), DIN (1.4547)
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 Washers find their place in various industries, including chemical and petrochemical plants, offshore oil and gas platforms, desalination facilities, marine engineering, and high-performance industrial machinery. They excel at load distribution, surface protection, and securing bolts and nuts in harsh, high-chloride, and high-temperature environments, ensuring safe and long-lasting fastening. With their outstanding corrosion resistance, strength, and fatigue performance, these washers are a reliable choice for demanding applications.
SMO 254 washers are properly packed to make sure that they are not damaged in any way. Every washer is protected and packed separately in special, moisture proof containers to avoid any harm or contamination. Labeling should be clear so that it can easily be distinguished and sorted in the best manner possible. The packaging of our washers is very thorough to ensure that they are of the highest quality and are readily usable, which is in line with our company’s policy on quality and customer satisfaction.
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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