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