M30 Metric Thread Dimensions and Pitch
Below are the key dimensions for M30 metric threads: pitch, tap drill and clearance drill according to ISO 724:2023.
M30 Coarse (standard) |
|---|
| M30 Pitch: 3.5mm |
| M30 Tap Drill: 26.5mm |
| M30 Clearance Drill: 33mm |
M30 Metric Thread
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.
M30 Coarse Pitch Dimensions
| Nominal Size | d=D | p | r | d2=D2 | d3 | D1 | h3 | H1 | Tap Drill |
|---|---|---|---|---|---|---|---|---|---|
| M30 | 30 | 3.5 | 0.505 | 27.727 | 25.706 | 26.211 | 2.147 | 1.894 | 26.5 |
M30 Fine Pitch Dimensions
All dimensions stated in are mm (millimetre)
ISO Metric Thread profile
Major Diameter
The Major Diameter is the largest diameter on the thread and is measured from the thread crest to crest (peak of the thread).
Pitch
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
Minor Diameter is the smallest diameter on the thread and is measured from the thread root to root (Bottom of the thread).
Thread Angle
The angle between the thread faces. 60 degrees in the example above.
Right-Hand Thread
The thread will assemble when rotated clockwise. "righty tighty lefty loosely"
Left-Hand Thread
The thread will assemble when rotated counter-clockwise.
Frequently asked questions
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