Home / SMO 254 Products /SMO 254 Instrumentation Fittings
Global Steel is a leading manufacturer and supplier of SMO 254 Instrumentation Fittings. We are one of the most reputed and trusted stockholders of Stainless steel fasteners, we supply our products at a competitive price range due to our vast experience and knowledge in this industry. We are trusted by international and domestic clients to provide top quality SMO 254 Instrumentation Fittings.
Table Of content
SMO 254 Instrumentation Fittings have molybdenum and nitrogen added in their composition. SMO 254 Instrumentation Fittings have enhanced corrosion resistance due to the addition of these elements. SMO 254 Instrumentation Fittings can also withstand pitting and stress corrosion cracking in harsh environments. This is because of the added chromium and molybdenum. The strength of SMO 254 Instrumentation Fittings is almost double that of other stainless steel 300-grade instrumentation fittings. Due to the high amounts of nitrogen, molybdenum and chromium in their alloy, SMO 254 Instrumentation Fittings are usually used in environments rich in chloride. SMO 254 Instrumentation fittings are more resistant to pure sulphuric acid than ASTM TP316. SMO 254 Instrumentation Fittings outperforms Stainless Steel 904L Instrumentation Fittings in naturally aerated sulphuric acid including chloride ions. They are used in a wide variety of applications such as Equipment for the handling of seawater, such as seawater cooling, cooling water pipes, ballast water systems, firefighting systems, Hydraulic and instrumentation tubing, Equipment in pulp bleaching plants, Components in gas cleaning systems, Tanks and pipelines for chemicals with high halide contents, etc.
| Imperial Size | 1/2″ to 2″ |
| Size | 1/16”OD to 2”OD, 2mm OD to 50mm OD |
| Thread | NPT, BSP, BSPT, UNF, ISO, SAE, MS, AN, weld ends etc. |
| Pressure Rating | 6000PSI for Stainless Steel, 300/1000/3000PSI for Brass |
| Temperature Ratings | Up to 1000°F (537°C) |
| Types | Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories |
| Application | Power/ gas/ petroleum/ chemical/ metallurgy/ shipbuilding etc. |
| Our service |
|
| Test Certificates |
|
| Production Technique | Forged/ Heat treated and machined. |

| STANDARD | UNS | WERKSTOFF NR. | EN | AFNOR | SIS |
| SMO 254 | S31254 | 1.4547 | X1CrNiMoCuN20-18-7 | Z1 CNDU 20.18.06Az | 2378 |






Contact us to get a quick quote for your requirement.
We offer These SMO 254 Instrumentation Fittings as per DIN, ISO, JIS or ANSI Standard.
| METRIC RANGE | Dimension in mm | |||||||||
| Part | T | P | L1 | M | C | D | F | G | H | N |
| N0 | mmo/d | Length | Body | Nut | Body | |||||
| 4mMC2 | 4 | 1/8′ | 31.35 | 9.53 | 16.67 | 14.29 | 12 | 12 | 24.21 | 10.72 |
| 4mMC4 | 4 | 1/4′ | 35.72 | 14.29 | 16.67 | 14.29 | 14 | 12 | 29.37 | 15.88 |
| 6mMC2 | 6 | 1/8′ | 33.34 | 9.53 | 18.26 | 15.88 | 14 | 14 | 25.40 | 11.11 |
| 6mMC4 | 6 | 1/4′ | 33.34 | 14.29 | 18.26 | 15.88 | 14 | 14 | 30.16 | 12.70 |
| 6mMC6 | 6 | 3/8′ | 38.89 | 14.29 | 18.26 | 15.88 | 19 | 14 | 30.96 | 13.49 |
| 6mMG8 | 6 | 1/2′ | 44.45 | 19.05 | 18.26 | 15.88 | 22 | 14 | 36.51 | 15.88 |
| 8mMC2 | 8 | 1/8′ | 34.53 | 9.53 | 19.05 | 16.67 | 14 | 17 | 26.59 | 11.51 |
| 8mM04 | 8 | 1/4′ | 39.29 | 14.29 | 19.05 | 16.67 | 14 | 17 | 31.35 | 13.10 |
| 10mM02 | 10 | 1/8′ | 35.72 | 9.53 | 19.84 | 17.46 | 17 | 19 | 27.78 | 11.91 |
| 10mMC4 | 10 | 1/4′ | 40.48 | 14.29 | 19.84 | 17.46 | 17 | 19 | 32.54 | 13.49 |
| 10mMC6 | 10 | 3/8′ | 40.48 | 14.29 | 19.84 | 17.46 | 19 | 19 | 32.54 | 13.49 |
| 10mMC8 | 10 | 1/2′ | 46.04 | 19.05 | 19.84 | 17.46 | 22 | 19 | 38.10 | 15.88 |
| 10mMC12 | 10 | 3/4′ | 46.83 | 19.05 | 19.84 | 17.46 | 27 | 19 | 38.89 | 15.08 |
| 12mMC4 | 12 | 1/4′ | 43.66 | 14.29 | 22.23 | 23.02 | 22 | 22 | 33.34 | 11.11 |
| 12mMC6 | 12 | 3/8′ | 43.66 | 14.29 | 22.23 | 23.02 | 22 | 22 | 33.34 | 11.11 |
| 12mMC8 | 12 | 1/2′ | 48.42 | 19.05 | 22.23 | 23.02 | 22 | 22 | 38.10 | 12.70 |
| 12mM012 | 12 | 3/4′ | 49.21 | 19.05 | 22.23 | 23.02 | 27 | 22 | 38.89 | 11.91 |
| 16mMC6 | 16 | 3/8′ | 44.45 | 14.29 | 22.23 | 24.61 | 24 | 27 | 34.13 | 10.32 |
| 16mMC8 | 16 | 1/2′ | 49.21 | 19.05 | 22.23 | 24.61 | 24 | 27 | 38.89 | 11.91 |
| 16mMC12 | 16 | 3/4′ | 49.21 | 19.05 | 22.23 | 24.61 | 27 | 27 | 38.89 | 10.32 |
| 18mMC8 | 18 | 1/2′ | 50.80 | 19.05 | 22.23 | 24.61 | 27 | 30 | 40.48 | 13.49 |
| 18mMC12 | 18 | 3/4′ | 50.80 | 19.05 | 22.23 | 24.61 | 27 | 30 | 40.48 | 10.32 |
| 18mMC16 | 18 | 1″ | 56.36 | 23.81 | 22.23 | 24.61 | 36 | 30 | 46.40 | 14.29 |
| 20mMC8 | 20 | 1/2′ | 50.80 | 19.05 | 22.23 | 24.60 | 27 | 30 | 40.48 | 13.49 |
| 20mM012 | 20 | 3/4′ | 50.80 | 19.05 | 22.23 | 24.61 | 27 | 30 | 40.48 | 10.32 |
| 20mM016 | 20 | 1″ | 56.36 | 23.81 | 22.23 | 14.61 | 36 | 30 | 46.04 | 14.39 |
| 25mMC12 | 25 | 3/4′ | 57.15 | 19.05 | 26.19 | 30.96 | 36 | 41 | 45.24 | 11.91 |
| 25mMC16 | 25 | 1″ | 61.91 | 23.81 | 26.19 | 30.96 | 36 | 41 | 50.01 | 13.49 |
| METRIC RANGE | Dimention in Inches | |||||||||
| Part | T | P | L1 | M | C | D | F | G | H | N |
| N0 | mmo/d | Length | Body | Nut | Body | |||||
| 1MC1 | 1/16 | 1/16 | .94 | .38 | .44 | .34 | 5/16 | 5/16 | .78 | .34 |
| 1MC2 | 1/16 | 1/8 | 1.00 | .38 | .44 | .34 | 1/2 | 5/16 | .84 | .41 |
| 2MC1 | 1/8 | 1/16 | 1.19 | .38 | .63 | .53 | 1/2 | 7/16 | .91 | .41 |
| 2MC2 | 1/8 | 1/8 | 1.19 | .38 | .63 | .53 | 1/2 | 7/16 | .91 | .41 |
| 2MC4 | 1/8 | 1/4 | 1.41 | .56 | .63 | .53 | 9/16 | 7/16 | 1.13 | .50 |
| 3MC2 | 3/16 | 1/8 | 1.21 | .38 | .63 | .54 | 7/16 | 1/2 | .95 | .43 |
| 3MC4 | 3/16 | 1/4 | 1.42 | .38 | .63 | .54 | 9.16 | 1/2 | 1.16 | .54 |
| 4MC1 | 1/4 | 1/16 | 1.29 | .56 | .70 | .60 | 1/2 | 9/16 | 1.00 | .46 |
| 4MC2 | 1/4 | 1/8 | 1.29 | .56 | .70 | .60 | 1/2 | 9/16 | 1.00 | .45 |
| 4MC4 | 1/4 | 1/4 | 1.50 | .75 | .72 | .63 | 9/16 | 9/16 | 1.19 | .50 |
| 4MC6 | 1/4 | 3/8 | 1.51 | .38 | .70 | .60 | 11/16 | 9/16 | 1.19 | .56 |
| 4MC8 | 1/4 | 1/2 | 1.73 | .56 | .70 | .60 | 7/8 | 9/16 | 1.44 | .67 |
| 5MC2 | 5/16 | 1/8 | 1.34 | .38 | .73 | .64 | 9/16 | 5/8 | 1.05 | .46 |
| 5MC4 | 5/16 | 1/4 | 1.52 | .56 | .73 | .64 | 9/16 | 5/8 | 1.23 | .54 |
| 6MC2 | 3/8 | 1/8 | 1.38 | .56 | .76 | .66 | 5/8 | 11/16 | 1.09 | .48 |
| 6MC4 | 3/8 | 1/4 | 1.57 | .75 | .76 | .66 | 5/8 | 11/16 | 1.28 | .57 |
| 6MC6 | 3/B | 3/8 | 1.57 | .75 | .76 | .66 | 11/16 | 11/16 | 1.28 | .56 |
| 6MC8 | 3/B | 1/2 | 1.79 | .56 | .76 | .66 | 7/8 | 11/16 | 1.50 | .67 |
| 6MC12 | 3/8 | 3/4 | 1.82 | .56 | .76 | .66 | 1-1/16 | 11/16 | 1.53 | .68 |
| 8MC4 | 1/2 | 1/4 | 1.17 | .75 | .86 | .90 | 13/16 | 7/8 | 1.31 | .47 |
| 8MC6 | 1/2 | 3/8 | 1.71 | .75 | .86 | .90 | 13/16 | 7/8 | 1.31 | .46 |
| 8MC8 | 1/2 | 1/2 | 1.90 | .56 | .86 | .90 | 7/8 | 7/8 | 1.50 | .54 |
| 8MC12 | 1/2 | 3/4 | 1.93 | .75 | .86 | .90 | 1-1/16 | 7/8 | 1.53 | .55 |
| 10MC6 | 5/8 | 3/8 | 1.74 | .56 | .86 | .96 | 15/16 | 1 | 1.34 | .43 |
| 10MC8 | 5/8 | 1/2 | 1.93 | .75 | .86 | .96 | 15/16 | 1 | 1.53 | .51 |
| 10MC12 | 5/B | 3/4 | 1.93 | .75 | .86 | .96 | 1-1/16 | 1 | 1.53 | .49 |
| 12MC8 | 3/4 | 1/2 | 1.99 | .75 | .86 | .96 | 1-1/16 | 1-1/8 | 1.59 | .57 |
| 12MC12 | 3/4 | 3/4 | 1.99 | .75 | .86 | .96 | 1-1/16 | 1-1/18 | 1.59 | .55 |
| 12MC16 | 3/4 | 1 | 2.21 | .94 | .86 | .96 | 1-3/16 | 1-1/8 | 1.81 | .68 |
| 16MC12 | 1 | 3/4 | 2.26 | .75 | 1.04 | 1.23 | 1-3/8 | 1-1/2 | 1.78 | .55 |
| 16MC16 | 1 | 1 | 2.45 | .94 | 1.04 | 1.23 | 1-3/8 | 1-1/2 | 1.97 | .65 |
| Grade | C | Mn | Si | S | Cu | Ni | Cr | P | Mo |
| SMO 254 | 0.02 max | 1 max | 0.8 max | 0.01 max | 0.5 – 1 | 17.5 – 18.5 | 19.5 – 20.5 | 0.03 | 1 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1320-1390 °C | MPa -650 | MPa – 300 | 35 % |
Application Industry
Instrumentation Fittings applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.
Egypt, Switzerland, Angola, Oman, Russia, Poland, Estonia, Nepal, United Kingdom, Bhutan, Ghana, Bahrain, Morocco, Colombia, Portugal, Indonesia, Jordan, Spain, Poland, Hungary, India, Vietnam, Singapore, Azerbaijan, Zimbabwe, Mongolia, New Zealand, Kuwait, Costa Rica, Israel, Iran, Argentina, Germany, Yemen, Belarus, Kazakhstan, Puerto Rico, Bulgaria, Taiwan, Greece, Tibet, Nigeria, South Africa, Bolivia, Qatar, Chile, Thailand, Malaysia, Kenya, Mexico, Czech Republic, Lithuania, Algeria, Ireland, Namibia, Saudi Arabia, United States, Iraq, Brazil, Chile, Croatia, Ecuador, Austria, South Korea, Libya, Netherlands, Sri Lanka, Pakistan, Bangladesh, Hong Kong, France, Slovakia, Denmark, Ukraine, Belgium, Canada, Trinidad & Tobago, Iran, Turkey, Philippines, Nigeria, Serbia, Norway, Afghanistan, Romania, Macau, Australia, United Arab Emirates, China, Mexico, Venezuela, Finland, Japan, Lebanon, Gambia, Tunisia, Sweden, Italy, Peru, Gabon.
Ankara, Kolkata, Bhopal, Ahvaz, Bangkok, Houston, Kuala Lumpur, Karachi, Al Khobar, Mexico City, Rio de Janeiro, Thane, Jamshedpur, Kanpur, Algiers, Santiago, Petaling Jaya, Aberdeen, Indore, Perth, Thiruvananthapuram, Ernakulam, Pimpri-Chinchwad, Jeddah, Brisbane, Faridabad, Mumbai, Rajkot, Al Jubail, Chennai, Baroda, Melbourne, Dammam, Noida, Toronto, Dallas, Lahore, Atyrau, Lagos, Nagpur, Edmonton, Colombo, Sharjah, New Delhi, Gimhae-si, Vadodara, Hanoi, Riyadh, Ludhiana, Moscow, Kuwait City, Seoul, Secunderabad, Los Angeles, Surat, Ulsan, La Victoria, Muscat, Istanbul, Hyderabad, Navi Mumbai, Dubai, Gurgaon, Vung Tau, Howrah, Geoje-si, Jakarta, Ho Chi Minh City, Calgary, Montreal, Chiyoda, Ahmedabad, Courbevoie, Chandigarh, Coimbatore, Singapore, Ranchi, Milan, Bogota, Cairo, Madrid, Visakhapatnam, Sydney, Manama, Busan, London, Jaipur, New York, Haryana, Doha, Port-of-Spain, Tehran, Granada, Caracas, Nashik, Bengaluru, Pune, Hong Kong, Abu Dhabi.
Contact us at the Industrial nearest to you or submit a business inquiry online.
Global Steel is a significant manufacturer and exporter of all ferrous and non-ferrous metals. As a pioneer and leader in the industry, Global Steel is at the forefront of technology and research.
Shop No.6, Sonarika Bldg, 25/C, Chandawadi, Cawasji Patel Tank, Mumbai, Maharashtra 400004
WhatsApp us