SMO 254 FASTENERS are used to create joints in between various applications. Their primary purpose is to join different components, and it could be permanent or temporary depending upon the need; however, it helps keep the structure intact. The SMO 254 FASTENERS alloy contains a high concentration of molybdenum which acts as an excellent resistance in saline and chlorine-containing environments.


254 SMO Nut FASTENERS are fasteners that are made up of molybdenum and nitrogen. The addition of nickel, carbon, and copper makes them even more robust and gives them resistance concerning pitting and the environment that can cause oxidation. SMO 254 FASTENERS are also very ductile, which means they are easily weldable, which is very helpful in various applications. Also, these fasteners can be fabricated and thus are easier to work with. 254 SMO Grade FASTENERS are two times greater strength than the 300 series austenitic stainless steel fasteners. There are high chances of carbide precipitation; however, here, the chances are significantly less because of the carbon content present in these.

SMO 254 Grade Head Hex FASTENERS are easier to use. The joints that comprise these can be easily dismantled without causing any damage to the entire structure; they are also held together with great strength and stability, making the entire structure even more solid and durable. Due to its chemical composition, it can also stand in a thermal environment and thus has an extensive range of applications where this can be used. They can also be available in different shapes and sizes based on the customer specifications.

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ISO 9001 : 2015


Specifications ASTM A479 / ASME SA479
Standard DIN, ISO ,JIS ,GB, IS, BS, ASTM
Size M0.2 to M33 | 3/6" to 2" | Custom Sizes
Length 3 mm to 200 mm | Custom Sizes
Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Form Hex, Threading, Square, Round as per Gauge Etc.
Threads Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or
Threads available UNF, BSW, BSF, METRIC, UNC, or as required
Threads Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification Dual Certified As per ASTM & ASME Codes
Test Certificate As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Raw materials Source JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc.
Packing IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request
Surface Coating Cadmium Coating
Hot Dipped Galvanizing Coating
Ptfe Coated Nickel Alloy 200 Fasteners
Phosphate Coating
Teflon Coating
Xylon Coating
Zinc Coating


Equivalent Grades

SMO 254 1.4547 S31254 - - - Z1 CNDU 20.18.06Az X1CrNiMoCuN20-18-7 -

Chemical Composition

Grade C Mn Si S Cr Fe Ni Mo P Cu
SMO 254 0.02 max 1.0 max 0.08 max 0.01 max 19.5 – 20.5 - 17.5 – 18.5 6 – 6.5 0.03 max 0.5 – 1

Mechanical Properties

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
SMO 254 8.0 g/cm3 1320-1390 ℃ MPa – 650 MPa – 300 35 %

Applications & Operations

We at DC Engineering make sure that our every product is made of high quality raw material. We thoroughly test each and every product before dispatching it to our customers. DC Engineering is one of the most trusted manufacturers and suppliers of fasteners and bolts which are applicable in various industries.

  • Gas Processing Industries
  • Petrochemical Industries
  • Power Generation Industries
  • Food Processing Industries
  • Chemical Industries
  • Oil & Gas Industries
  • Fertilizers Industries
  • Sugar Industries

Experimentation & Testing

DC Engineering is known for its accurate and perfect dimensions. We at DC engineering thoroughly test all our products before shipping them to the customers. We carry out destructive as well as non-destructive tests on all our products.

  • Impact Analysis
  • Eddy Current Examining
  • Power Generation Industries
  • Hydrostatic Analysis
  • Prompt Test
  • Positive Material Recognition
  • Large-Scale Test
  • Pitting Protection Test

Packaging & Dispatching

DC Engineering uses the most safest and the most effective ways of packaging for all types of deliveries. We pack our goods in various ways such as:

  • Wooden Boxes
  • Wooden Crates
  • Wooden Pallets
  • Carton Boxes
  • Shrink-Wrapped
  • Bubble Wrap Packing Material
  • Laminated & Metallized Films
  • Wooden or Plastic Crates

Cities We Export

Srinagar, Tamil Nadu, West Bengal, Vijayawada, Maharashtra, Rajkot, Karnataka, Akola, Amravati, Kanpur, Aurangabad, Andhra Pradesh, Saharanpur, Vasai, Varanasi, Faridabad, Bhadreswar, Jhansi, Nashik, Solapur, Surat, Nagpur, Raipur, Haryana, Buxar, Bhavnagar, Pune, Punjab, Banswara, Uttar Pradesh, Tadepalligudem, Manipur,Delhi, Dhanbad, Guntur, Gujarat, Ludhiana, Kalyani, Nagapattinam, Benin, Vadodara, Kerala, Patna, Ulhasnagar, Chhattisgarh, Mizoram, Chennai, Kurnool, Datia, Mangalore, Ambala, Kota, Miryalaguda, Orissa, Mumbai, Nagda, Bikaner, Ballia, Allahabad, Suryapet, Jaipur, Haora, Durgapur, Udgir, Jodhpur, Amritsar, Kalyan, Bangalore, Puducherry, Agra, Kolkata, Tirunelveli, Gujarat, India, Lucknow, Meerut, Dehradun, Bihar, Ujjain, Jharkhand, Ahmedabad, Coimbatore, Sadar, Jamnagar, Hyderabad, Chandigarh, Ranchi, Jamalpur, Ambattur, Jabalpur, Waghala, Nagaur, Gulbarga

Countries We Export

Iran, Ecuador, Mexico, Afghanistan, Bulgaria, Denmark, Kenya, Singapore, Portugal, Venezuela, Sri Lanka, Chile, Gabon, Colombia, Belgium, Peru, Belarus, Yemen, Thailand,France, Italy, Mexico, Greece, Kuwait, Romania, Iraq, Netherlands, Sweden, Switzerland, Lithuania, Lebanon, Poland, Philippines, United Kingdom, Norway, Angola, Kazakhstan, Taiwan, Nigeria, Poland, China, Nigeria, Spain, Mongolia, New Zealand, United States, Hungary, Libya, Serbia, Ukraine, Finland, South Africa, Iran, Vietnam, Israel, Czech Republic, Slovakia, Hong Kong, Azerbaijan, Qatar, Japan, Oman, Malaysia, Pakistan, Algeria, Bangladesh, Jordan, Indonesia, Russia, United Arab Emirates, Brazil, Estonia, Turkey, Austria, Croatia, Ghana, Bahrain, Korea, Canada, Bolivia, Costa Rica, Trinidad & Tobago, Tunisia, Chile, Morocco, Bhutan, Argentina, Egypt

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