What is the standard bolt size for 8mm applications?

For 8mm applications, the standard bolt size is typically an M8 (Metric) bolt. This is a common size used for various mechanical and automotive applications where a small diameter bolt is required. The "M" designation refers to metric bolts, with the number indicating the nominal diameter in millimeters.

In the context provided, it specifies that for single anchorage in minibuses and large buses, an M8 high tensile steel bolt can be used. This indicates that an M8 bolt is a suitable standard size for these specific applications. However, it's important to note that the actual design and requirements of the application may dictate a different bolt grade or material, but the baseline standard for 8mm applications is often an M8 bolt.