M30 Metric Thread

Below are the key dimensions for M30 metric threads: pitch, tap drill and clearance drill according to ISO 724:2023.
Step onto our M30 Metric Thread Page, your go-to hub for swift metrics on M30 metric threads. We've organised a comprehensive library of data for all the common metric threads you'll utilise in your parts, focusing on essential measurements like thread pitch, tap drill, and clearance drill. This page is an all-encompassing resource for engineers, machinists, and hobbyists seeking precise and dependable information.
All dimensions stated in are mm (millimetre)
The Major Diameter is the largest diameter on the thread and is measured from the thread crest to crest (peak of the thread).
This is the distance (mm) from one thread to the next, this can be measured from tip to tip or groove to groove. Pitch can also be defined as TPI, which stands for threads per inch.
Minor Diameter is the smallest diameter on the thread and is measured from the thread root to root (Bottom of the thread).
The angle between the thread faces. 60 degrees in the example above.
The thread will assemble when rotated clockwise. "righty tighty lefty loosely"
The thread will assemble when rotated counter-clockwise.
The pitch for an M30 thread is 3.5 mm.
The tap drill for an M30 thread is 26.5 mm.
The clearance drill for an M30 thread is 33 mm.