ASME B18.2.1-2 Hexagon Head Bolts

 ASME B18.2.1-2 is the standard for hexagonal head bolts. Hexagonal head bolts, as the name suggests, have hexagonal external threaded fasteners on the head, which require a wrench to rotate. According to the ASME B18.2.1-2 standard promulgated by the country, the head height of hexagonal head bolts and the length of the bolt's shank have larger tolerances than hexagonal head screws. Therefore, hexagonal head screws formulated in accordance with this standard can be installed in any hexagonal head bolt and used together.

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Product drawing

Product Specification

Some introduction about our company

Application

Our products are widely used in mechanical, electrical, automotive, building construction, railways, bridges, steamships, fire protection and communication system, etc.

Workshop

Certification

Through scientific management, Jinan Star Fastener Co., Ltd. has obtained the 2015 version of ISO9001 quality management system certification. In 2017, the laboratory passed the national CNAS certification. In 2018, the company passed the European CE certification.

Testing Equipment

Our company has a specialized laboratory with digital hardness testers, microscopes, universal testing machines, axial force meters, hydrogen embrittlement detection devices, magnetic particle flaw detectors, metallographic analyzers, carbon and sulfur analyzers and salt spray testing machines, etc. Experimental testing equipment is used to conduct comprehensive testing of the chemical composition of raw materials, product hardness, mechanical properties, coating thickness and corrosion resistance to ensure that all products meet standard requirements and satisfy customers.

Production equipment

Our company has more than 300 production equipment.The product production process includes: Annealing, shot blasting, cold heading, thread rolling, heat treatment, galvanizing, finished product testing, packaging, etc. are all completed in the company.

Packing

Service

 Our manufacturer focuses on producing hexagon head bolts that comply with ASME B18.2.1-2 standards, providing customers with high-quality, high-performance fastener products. Our services cover product consultation, customized production, quality testing, logistics and distribution and other comprehensive services to ensure that customers can purchase and use our products with satisfaction.

FAQ

1.What is the ASME B18.2.1-2 standard?

Answer: ASME B18.2.1-2 is the standard for hexagonal head bolts set by the American Society of Mechanical Engineers (ASME). This standard specifies the dimensions, tolerances, materials, performance and other requirements for hexagonal head bolts to ensure the quality and reliability of the bolts.

2. Why choose ASME B18.2.1-2 standard hexagon head bolts?

Answer: Hexagon head bolts under the ASME B18.2.1-2 standard have excellent performance and wide applicability. They comply with international standards and are of reliable quality to meet the needs of various industrial and mechanical fields.

3. What are the options for bolt materials?

Answer: Steel, stainless steel. Specific material selection depends on the application environment and requirements. We can provide suitable material options according to customer needs.

4. How to determine the performance level of bolts?

Answer: The performance class of a bolt depends on its material and heat treatment. We perform strict material selection and heat treatment on bolts in accordance with the regulations in the ASME B18.2.1-2 standard to ensure that they reach the corresponding performance level. Customers can select the appropriate performance level based on specific application needs.

5. How to ensure the quality of bolts?

Answer: Our manufacturer produces hexagonal head bolts in strict accordance with ASME B18.2.1-2 standards and conducts strict quality control and testing. Each bolt will undergo dimensional inspection, material analysis and performance testing to ensure compliance with standard requirements.

6. How to choose the appropriate bolt specification?

Answer: Several factors need to be considered when selecting appropriate bolt specifications, such as the material, thickness, hole diameter, etc. of the connecting piece. We can provide suitable bolt specification suggestions based on customer needs and specific application scenarios. At the same time, we can also provide customized services and produce bolts that meet the needs of customers according to their special requirements.