Sumit Impex is the leading manufacturer, supplier and exporter of a diverse selection of ASTM A193 Grade B7 / Grade B7 M Fasteners. These fasteners are distributed globally, known for their exceptional quality, and come in standard and customized sizes to suit our client’s needs.

Sumit Impex is a Supplier of ASTM A193 Grade B7 / Grade B7 M Fasteners, Biggest Stockist of ASTM A193 Grade B7 / Grade B7 M Fasteners as per Standards in Mumbai, India.

ASTM A193 Grade B7 Fastener, Grade B7 M Fasteners, ASTM A193 Bolts, ASTM A193 Grade B7 Fasteners in Best Price, Grade B7 Nuts, Grade B7 Bolts, ASTM A193 Screws, Grade B7 M Washers

ASTM A193 Grade B7 / Grade B7M Fasteners are high-strength bolts, screws, or studs manufactured to meet specific standards set by the American Society for Testing and Materials (ASTM). These fasteners are commonly used in construction, oil and gas, and manufacturing industries, where reliability and durability are crucial. Known for their exceptional mechanical properties and corrosion resistance, ASTM A193 Grade B7 / Grade B7 M Fasteners provide secure and long-lasting connections in various applications.

At Sumit Impex, we prioritize customer satisfaction by ensuring the quality of our products, like ASTM A193 Grade B7 / Grade B7M Fasteners. We conduct various tests to confirm their security and purity, including mechanical, hardness, and PMI (Positive Material Identification)  tests. Once production is complete, an external party inspects the goods to ensure they meet global quality standards before releasing them to the market.

ASTM A197 B7 Fasteners

Standard Specification For ASTM A193 Grade B7 / Grade B7 M Fasteners

Fasteners size Bolt / Screw Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Nuts Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Washers Size : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Machine Screws Size : M1.6 – M12
Self Tapping Screw Size : No.2 – No. 14
Fasteners Length 3 mm to 200 mm
Fastener Threads UNF, BSW, BSF, METRIC, UNC or as required
Standard of Stainless Steel Fasteners DIN : DIN 934, DIN 931, DIN 970, DIN 933
ISO : JIS standards, ISO 4033, ISO 4032,
ANSI – American National Standards Institute
ASME B18.5
ANSI B 28.2.4 1M
as per defined in ASME B16.5 standard SS Stud Bolt length
ANSI B 18.2.4 2M
as per defined in ASME B18.2.2 SS Hex nuts
Dimensions DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Surface Coating Ptfe Coated Stainless Steel Fasteners
Phosphate Coating
Teflon Coating
Zinc Coating
Hot Dipped Galvanizing Coating
Cadmium Coating
Xylon Coating
Fasteners Finishing Stainless steel : Self-Colour, Passivated, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Stainless Steel, Sherardized, some special one like DACROMET Geometry and Mechanically Applied coating ,Dacroment, nickel plated, anodizing, plated zinc-nickel
Zinc (blue, black, yellow, white), black oxide.

ASTM A193 Grade B7 / Grade B7 M Fasteners Types

Stud Bolts

Stud Bolts







ASTM A193 Grade B7 / Grade B7 M Fasteners Chemical Composition

Carbon 0.37-0.49 % D 0.02 %
Manganese, max 0.65-1.10 % 0.04 %
Phosphorus, max 0.035 % 0.005 % over
Sulfur, max 0.040 % 0.005 % over
Silicon 0.15 – 0.35 % 0.02 %
Chromium 0.75-1.20 % 0.05 %
Molybdenum 0.15-0.25 % 0.02 %

ASTM A193 Grade B7 / Grade B7 M Fasteners Mechanical Properties

Diameter Inch Min Tempering Temperature, °C Tensile Strength min, ksi Yield strength, min, 0.2% offset, ksi Elongation in 4D min, % Reduction of Area, min, % Hardness, max
2.5 and under 1100 125 105 16 50 321 HBW or 35 HRC
over 2.5 to 4 1100 115 95 16 50 321 HBW or 35 HRC
over 4 to 7 1100 100 75 18 50 321 HBW or 35 HRC

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ASTM A193 Grade B7 / Grade B7 M Fasteners Applications

Export & Supply Destinations Of ASTM A193 Grade B7 / Grade B7 M Fasteners

Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, British, China, Egypt, Hong Kong, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kuwait, Kyrgyzstan, Lebanon, Macau, Malaysia, Maldives, Mongolia, Myanmar, Nepal, North Korea, Oman, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Taiwan, Thailand, Turkey, United Arab Emirates, Vietnam.

Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Croatia, Cyprus, Czechia/Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Netherlands, Norway, Poland, Portugal, Romania, Russia, Serbia, Slovakia, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom.

Algeria, Angola, Botswana, Burkina Faso, Burundi, Cameroon, Central African Republic, Egypt, Eswatini, Ethiopia, Gambia, Kenya, Liberia, Libya, Madagascar, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Niger, Nigeria, Rwanda, Senegal, Seychelles, South Africa, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe.

Antigua and Barbuda, Bahamas, Barbados, Belize, Canada, Costa Rica, Cuba, Dominica, Dominican Republic, El Salvador, Grenada, Guatemala, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Panama, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, United States of America.

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela.