You are currently viewing What is the ASME Code for Bolt?

What is the ASME Code for Bolt?

What is the ASME Code for Bolt?

Demystifying the ASME Code for Bolts: Ensuring Structural Integrity and Safety

In the realm of engineering, ensuring structural integrity and safety is paramount. Bolts, the unsung heroes of construction and machinery, play a crucial role in holding together various components. The American Society of Mechanical Engineers (ASME) has set standards to regulate the design, material, and construction of bolts. Let’s delve into what the ASME code for bolts entails and why it’s instrumental in ensuring reliability and safety across industries.

Understanding the ASME Code:

The ASME Boiler and Pressure Vessel Code (BPVC) is a comprehensive set of standards governing the design, fabrication, and inspection of boilers, pressure vessels, and various components including bolts. Within the ASME BPVC, Section II – Part A provides specifications for ferrous materials, including the mechanical properties of bolts.

ASME B18 Standards for Bolts:

Within the ASME standards, the B18 series specifically addresses standardized dimensions, materials, mechanical properties, and performance requirements for various types of bolts, screws, nuts, and washers. The B18 standards cover a wide range of fasteners, ensuring consistency and reliability in their application across industries.

ASME B18.2 Series:

The ASME B18.2 series, under the B18 standards, focuses on dimensional specifications for bolts, including head dimensions, thread lengths, and shank lengths. These standards ensure interchangeability and compatibility of bolts from different manufacturers, promoting uniformity in construction and machinery assembly.

ASME B18.31.3:

ASME B18.31.3 standardizes the requirements for metric hex flange screws. It covers dimensions, tolerances, mechanical properties, and testing procedures for metric hex flange screws with specified thread sizes and lengths.

Importance of ASME Code for Bolts:

  • Safety Assurance: Compliance with ASME standards ensures that bolts meet stringent quality and performance requirements, guaranteeing structural safety in critical applications such as aerospace, automotive, and construction.
  • Interchangeability: Standardization of bolt dimensions and materials allows for interchangeability, simplifying procurement and assembly processes across different projects and manufacturers.
  • Reliability: Bolts meeting ASME standards undergo rigorous testing for mechanical properties, ensuring their reliability in bearing loads, resisting tension, and withstanding environmental conditions.

Application in Various Industries:

  • Construction: ASME-compliant bolts are integral in constructing buildings, bridges, and infrastructure, providing stability and safety in structural assemblies.
  • Manufacturing: From heavy machinery to intricate equipment, ASME-standard bolts play a vital role in securely fastening components, ensuring operational efficiency and safety.
  • Automotive and Aerospace: Bolts meeting ASME standards are essential components in vehicles and aircraft, guaranteeing reliability and safety in critical assemblies.


The ASME Code for bolts sets stringent standards governing the design, materials, and construction of bolts, ensuring safety, reliability, and uniformity across industries. These standards play a pivotal role in upholding structural integrity, enabling engineers and manufacturers to create robust and safe assemblies.

In essence, adherence to the ASME standards for bolts is not just a regulatory requirement but a commitment to reliability and safety, serving as the backbone of countless constructions and machinery across diverse industries.

Bhansali Metalloys Inc is one of the leading Manufacturer, Exporters, and Suppliers of High Quality ASME Fasteners all over in India. We are Manufacturer, Supplier and Dealer of various types of Fasteners such as Bolts, Nuts, Threaded Rods, Screws, Washers and many more. We are ASME Fasteners Manufacturer in India. These ASME Fasteners are available in different grades and materials. We are ASME Fasteners Manufacturer, Supplier, Dealer, and Exporter in India. We are ASME Fasteners Supplier in India. Contact Us +919152160158 or email to for M8 Thread Sizeprice list.

For our full list of products that we offer check out our website here. Be sure to join the conversation in our Facebook, Instagram, Twitter, LinkedIn Group.

Each Stainless Steel ASME Fasteners is otherwise designed based on the characteristics of the applying and additionally the pressure. Consequently, different industries use different ASME Fasteners. We also produce customized ASME Fasteners Products at our factory as per our client’s requirements. For any types of ASME Fasteners Price List Call on +91 9152160158 or drop an Email to |

We Export Across the Globe

Exports in Asia Afghanistan, Armenia, Azerbaijan, Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China, Georgia, Hong Kong, India, Indonesia, Japan, Kazakhstan, South Korea, Kyrgyzstan, Laos, Macao, Malaysia, Maldives, Mongolia, Myanmar (ex-Burma), Nepal, Pakistan, Phillipines, Singapore, Sri Lanka (ex-Ceilan), Taiwan, Tajikistan, Thailand, Timor Leste (West), Turkmenistan, Uzbekistan, Vietnam.

Export to Africa Burundi, Comoros, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Malawi, Mauritius, Mayotte, Mozambique, Reunion, Rwanda, Seychelles, Somalia, Tanzania, United Republic of Uganda, Zambia, Zimbabwe, Angola, Cameroon, Central African Republic, Chad, Congo (Brazzaville), Congo, Democratic Republic of the Equatorial Guinea, Gabon, Sao Tome and Principe, Algeria, Egypt, Libyan Arab Jamahiriya, Morroco, South Sudan, Sudan, Tunisia, Western Sahara, Botswana, Lesotho, Namibia, South Africa, Swaziland, Benin, Burkina Faso, Cape Verde, Cote d’Ivoire (Ivory Coast), Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Saint Helena, Senegal, Sierra Leone, Togo.

Export to America Anguilla, Antigua and Barbuda, Aruba, Bahamas, Barbados, Bonaire, Saint Eustatius and Saba, British Virgin Islands, Cayman Islands, Cuba, Curaçao, Dominica, Dominican Republic, Grenada, Guadeloupe, Haiti, Jamaica, Martinique, Monserrat, Puerto Rico, Saint-Barthélemy, St. Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines, Sint Maarten, Trinidad and Tobago, Turks and Caicos Islands, Virgin Islands (US), Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands (Malvinas), French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela, Bermuda, Canada, Greenland, Saint Pierre and Miquelon, United States.

Export to the Middle East Bahrain, Iraq, Iran, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, United Arab Emirates, Yemen.