What Are The Standards For External Hexagonal Bolts

Outer hexagonal bolt is a common type of bolt, also known as hexagonal head bolt or hexagonal bolt. They usually comply with international standards, and the following are some common external hexagonal bolt standards:

1. DIN standard: Hexagonal bolts comply with German industrial standards (DIN). Common DIN standards include DIN 931 (partial thread), DIN 933 (full thread), and DIN 912 (hexagon socket head).
2. ISO standards: The International Organization for Standardization (ISO) has developed a series of standards for hexagonal bolts. Among them, ISO 4014 (partial thread) and ISO 4017 (full thread) are the most common ISO standards.
3. ANSI/ASME standards: The American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME) have jointly developed a series of external hexagonal bolt standards, such as ANSI/ASME B18.2.1 and ANSI/ASME B18.2.3.1.
These standards specify the dimensions, thread specifications, materials, and performance parameters of external hexagonal bolts. For example, the diameter, length, thread type (partial or full thread), thread specification (such as M6, M8, M10, etc.), and material of the bolt.
It should be noted that the specific standard of external hex bolts used depends on the conventions and engineering requirements of the region. When selecting external hexagonal bolts, appropriate standards should be selected based on specific application scenarios and engineering requirements, and ensure compliance with relevant quality and performance requirements. If necessary, please consult a professional engineer or supplier for more accurate advice and information.
In addition to the common hexagonal bolt standards mentioned above, there are also some other standards as follows:
1. JIS standard: The Japanese Industrial Standard (JIS) also has a series of standards applicable to external hexagonal bolts, such as JIS B1180 and JIS B1189.
2. GB standard: The Chinese National Standard (GB) has also developed some standards applicable to external hexagonal bolts, such as GB/T 5782 and GB/T 5783.
3. BS Standards: The British Standard (BS) also has a series of standards applicable to external hexagonal bolts, such as BS 4190 and BS 3692.
These standards usually specify parameters such as the diameter, length, thread specifications, and material of bolts, and provide corresponding technical requirements and testing methods.
When selecting external hexagonal bolts, bolts that meet the corresponding standards should be selected according to the local customs and engineering requirements. At the same time, it is necessary to ensure that the selected bolts meet the relevant quality and performance requirements to ensure the reliability and safety of the fixed connection.
If there are special requirements or specific questions about the specifications of external hexagonal bolts, it is recommended to consult professional engineers or suppliers for more accurate information and advice.