Hexagon head bolt standard
In the modern machinery industry, hexagon head bolts have become a necessary fastener. They are not only used to connect mechanical parts, but can also be used in construction, electronics, automobiles, aircraft and many other fields. Therefore, standardized hex head bolt sizes and materials are very important. Next we will introduce some commonly used standards.
1. ANSI standards: The American National Standards Institute (ANSI) has defined many hexagon head bolt standards similar to ISO and DIN standards. For example, ANSI B18.2.1 applies to partial threads, while ANSI B18.2.3.6M applies to full threads. In addition, ANSI also defines standards for hexagon head bolts with square heads and square holes (ANSI B18.2.2) and standards for dry zinc hexagon head bolts (ANSI B18.2.6).
2. JIS standards: Japanese Industrial Standards (JIS) define many hexagon head bolt standards that are the same as ISO standards. For example, JIS B1180 applies to partial threads, while JIS B1189 applies to full threads.
In addition to the above standards, there are also some other regions and countries that have their own standards, such as Chinese standards (GB/T) and European standards (EN). When selecting standards, you should try your best to choose standards that conform to your region or country to avoid problems such as size mismatch and inappropriate materials.
In addition, the standard also stipulates the mechanical properties of bolts. For example, bolts must undergo tensile and hardness testing to ensure their strength and toughness. The standard also stipulates the anti-corrosion and anti-corrosion properties of bolts so that the bolts can maintain their performance for a long time in harsh environments.
In short, choosing hexagonal head bolts that are suitable for your region or country and meet the standards is an important step to ensure safe and reliable operation of machinery and other fields. In engineering design and manufacturing, the selection and correct use of standards are very important and require continuous learning and updating.
