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Inch & Metric Thread Standards
Metric thread callouts are fundamentally different because the thread pitch (distance between each thread, in mm) is specified instead of threads per inch or per mm. For example, an M10x1. 5 (coarse) thread has a 1.5mm pitch, while an M10x1. 25 (fine) thread has a 1.25mm pitch.
In this way, what does m12x1 5 mean?
The M12 means the thread OD is 12mm, the 1.75 is the pitch of the thread. One turn of the screw moves the screw's position 1.75mm. A M3x0. 5 pitch thread is a 3mm diameter thread that moves 0.5mm per turn.
Similarly, it is asked, how does thread size work?
STANDARD thread size refers to a thread measurement system commonly used in the United States called the 'Unified Thread Standard'. Larger screw sizes typically use a fraction in inches to identify major diameter, so a 1/4-20 screw has a major diameter of 1/4".
For example, an M10x1. 5 (coarse) thread has a 1.5mm pitch, while an M10x1. 25 (fine) thread has a 1.25mm pitch. For example, the thread "M10" automatically means a coarse pitch, while any added pitch callout, such as M10x1. 25, specifies a non-coarse pitch.