Japans National Standard Cylindrical Thread
Since its establishment in 1868, the Japanese standard measurement system has been the basis for measurements in Japan and for producing Japanese products. One of the standards used for precision parts production is the Japanese National Standard Cylindrical Thread (JIS B 0207). This standard is used for threaded parts and connectors, including screws, nuts and other fasteners, as well as railroad parts.
The JIS B 0207 standard defines an exact thread size, pitch and tolerance. Using the standard, parts can be produced with the same universal thread size, allowing them to be interchangeable between manufacturing facilities and across international borders.
The JIS B 0207 standard provides manufacturers with the tools to manufacture threaded parts with a consistent quality and accuracy. The standard dictates specifications for cylindrical threads including the major diameter, minor diameter, pitch, class and tolerance to ensure accuracy when threading parts. The thread shape and measurements are also in compliance with international standards, allowing parts to be compatible with parts from other countries.
The JIS B 0207 standard also provides manufacturers with specifications for screw-type fasteners. The standard provides both dimensions and design criteria for externally threaded fasteners such as bolts, screws, studs and nuts. These fasteners are necessary for assembling various parts and components. Because of the rigor of the JIS B 0207 standards manufacturers are able to produce fasteners that fit precisely as designed.
The use of the JIS B 0207 standard ensures that parts will have a consistent quality and accuracy when produced. Parts produced with this standard are interchangeable between manufacturing facilities and across international borders. This assures customers that their purchase is of the highest quality, saving them both time and money.
The JIS B 0207 standard is the basis for producing precision parts. It has enabled Japan to maintain its reputation as a leader in the manufacture of precision parts and components across the world. The standard has also enabled manufacturers to produce parts that are interchangeable and of a consistent quality, as well as fasteners that are of a consistent quality, allowing customers to enjoy reliable and efficient products.
