Find that Thread Size

steve livesley

A useful source of information if you are trying to identify a thread. Most thread specs on the MGB are UNF or UNC.

The most frequently used thread form is the 60° thread form found in the metric ISO thread and in the UN-series. However, there are other thread standards as well. These are either based on foreign standards or are used for special applications. E.G. in the medical technology, in aeronautical engineering or astronautics. The most common threads are:
• ISO Thread (metric)
• UN (Unified National) series Thread
• Whitworth Thread
• Pipe Thread
• Trapezoidal Thread
• Knuckle Thread
• Buttress Thread

Thread Chart at ……. https://www.gewinde-normen.de/en/index.html

Foe example:-