What is ASTM A193 Grade B7 / Grade B7 M Fasteners ?

The bolts are made of thermally treated chromium molybdenum steel. The majority of ASTM A193 Grade B7 bolts are alloyed with chromium and molybdenum. Heat is used to quench and modify these ASTM A193 B7 Metric Bolts. Heat treatment of the ASTM A193 B7 Hex Bolts Material aids in the development of desirable mechanical properties, such as enhanced mechanical strength.

The corrosion resistance of ASTM A193 B7 Fasteners can be improved by coating them. ASTM A193 Grade B7m Bolts are frequently utilized in the fastening of medium high heat service components. These bolts may be fluid quenched at temperatures ranging from 50 to 900 degrees Fahrenheit, or air quenched from – 40 to 900 degrees Fahrenheit.


India’s Largest astm a193 gr b7 stud bolt, a193 b7 bolts, a193 b7 studs, B7 Fasteners, B7 Nuts, A193 Gr. B7 Threaded Rod suppliers in mumbai, India

Sumit Impex is well-known for producing ASTM A193 Grade B7 / Grade B7M Fasteners of exceptional quality. They follow all rules and regulations, as well as industrial standards and guidelines, in order to produce high-quality items. As a consequence, they have excellent attributes and characteristics.

These are an universal standard for strong ductile alloy steel bolting material intended for use in elevated temperature or high intensity operation, as well as other specific determination purposes.

ASTM A193 Grade B7 / Grade B7 M Fasteners Specifications

Grade ASTM A193 Grade B7 / Grade B7 M Fasteners
Specification ASTM A 193 ASME SA 193
Standard  DIN, ASTM, BS and all International Standards
Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length 3 mm to 200 mm
Form Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts.
Application Most commonly used in petroleum refineries, Boilers, Heat exchangers, Condensers, Pipelines, Cooling towers, Steam exhausts, Electric generation plants, On occasion will be found in fertilizer and chemical plants.
Grade Description Diameter Tensile Strength, min. Yield Strength, min. Hardness, max. Marking
ASTM A193 B7 Chromium-Molybdenum 2 1/2” and under 125 105 321 HB or 35 HRC B7
over 2 1/2” to 4” 115 95 321 HB or 35 HRC
over 4” to 7” 100 75 321 HB or 35 HRC
Grade C Mn Si P S Ni Cr Mo
B7 (AISI 4140) 0.37 – 0.49% 0.65 – 1.10% 0.15 – 0.35% 0.035% 0.040% 0.75 – 1.20% 0.15 – 0.25%
Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min
B7 Up to 2-1/2 125 105 16 50
2-5/8 – 4 115 95 16 50
4-1/8 – 7 100 75 18 50

Other Products

ASTM A193 B7 Flat Washers ASTM A193 B7 Pozi Csk Machine Bolts
Hex Head Bolts ASTM A193 B7 Nuts and Bolts
ASTM A193 B7 Hex Head Bolts ASTM A193 B7 Coupling Nut
ASTM A193 B7 Square Bolts ASTM A193 B7 Star Bolts
ASTM A193 B7 Square Bolts ASTM A193 B7 U Bolts
ASTM A193 B7 U Bolts ASTM A193 B7 U Bolts

ASTM A193 Grade B7 / Grade B7 M Fasteners Price List

  • ASTM A193 B7 Hex Bolts
    US $1000-2500 / Ton
  • ASTM A193 B7 Flat Bolts
    US $2000-3000 / Ton
  • ASTM A193 B7 Hex Bolts
    US $1.5-4.5 / Kilogram
  • ASTM A193 B7 Flat Bolts
    US $1800-2300 / Ton
  • ASTM A193 B7 Hex Head Bolts
    US $1550-2400 / Ton
  • ASTM A193 B7 Hex Head Set screws
    US $1800-2300 / Ton
  • ASTM A193 B7 Hex Head Flange Bolts
    US $1300-2600 / Metric Ton

Different Types of Grade B7 / B7M Fasteners

  • Grade B7M Carbon Steel Hex Bolt
  • Class B7M A193 Hex Head Bolt
  • ASTM A193 B7M Hexagonal Hex Bolts
  • Metric B7M Hex Head Bolts
  • B7M Gr Dimensional Heavy Hex Bolts
  • Grade B7 Carbon Steel Hexagonal Bolt
  • Class B7 A193 Hexagonal Bolt
  • ASTM A193 B7 Hexagonal Industrial Bolts
  • Carbon Steel B7 Hexagonal Bolts
  • B7 Gr Hexagonal Carbon Steel Dimensional Bolts
  • Grade B7 High Tensile Carbon Steel Bolt
  • Class B7 High Tensile Bolt
  • Grade B7 HT Industrial Stud Bolts
  • Carbon Steel B7 High Tensile Bolts
  • B7 Gr Carbon Steel Dimensional Stud Bolts


We Sumit Impex Metal Ensure the best quality of Packing , because its play important role especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put extraordinary concern regarding packaging.

We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,

  • Boxes and Crates
  • Shrink-wrapped
  • Carton boxes
  • Wooden pallets
  • Wooden boxes
  • Wooden crates

Testings (Destructive, Non Destructive)

  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Radiography Test
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test

Application Industries

These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.

  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Grade B7 Fasteners Manufacturers

Country we serve / City we deliver

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

& Boston, Moscow, Toronto, Geoje-si, Karachi, Istanbul, Courbevoie, Milan, Chiyoda, Thane, Aberdeen, Brisbane, Lagos, Lahore, Vung Tau, Faridabad, Ho Chi Minh City, Colombo, Santiago, Jaipur, Jeddah, Ludhiana, Doha, Haryana, Vadodara, Atyrau, Petaling Jaya, Ahvaz, Ernakulam, Gimhae-si, Surat, Sydney, Bengaluru, Mexico City, Ulsan, Madrid, Bangkok, Pimpri-Chinchwad, Thiruvananthapuram, New York, Bhopal, Howrah, Coimbatore, Chennai, Edmonton, Los Angeles, Rajkot, Mumbai, Sharjah, Cairo, Seoul, London, Jakarta, Abu Dhabi, Dammam, Nashik, Dubai, Hyderabad, Houston, Manama, Calgary, Granada, Rio de Janeiro, Navi Mumbai, Al Khobar,Kanpur, Hong Kong, Nagpur, Port-of-Spain, Ankara, Baroda, Algiers, Ahmedabad, Perth, Gurgaon, Singapore, Busan, Montreal, Al Jubail, Secunderabad, Ranchi, Jamshedpur, New Delhi, Tehran, Kolkata, Caracas, Melbourne, Kuwait City, Dallas, Pune, Muscat, Noida, Indore, Hanoi, Chandigarh, La Victoria, Kuala Lumpur, Bogota, Visakhapatnam

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