M27 Metric Thread Dimensions and Pitch
Below are the key dimensions for M27 metric threads: pitch, tap drill and clearance drill according to ISO 724:2023.
M27 Coarse (standard) |
|---|
| M27 Pitch: 3mm |
| M27 Tap Drill: 24mm |
| M27 Clearance Drill: 30mm |
M27 Metric Thread
Welcome to our M27 Metric Thread Page, your ultimate resource for quick measurements on M27 metric threads. We've gathered a broad spectrum of data for all standard metric threads you'll employ in your components, highlighting important metrics like thread pitch, tap drill, and clearance drill. This page serves as a complete solution for professionals and hobbyists in need of reliable, accurate data.
M27 Coarse Pitch Dimensions
| Nominal Size | d=D | p | r | d2=D2 | d3 | D1 | h3 | H1 | Tap Drill |
|---|---|---|---|---|---|---|---|---|---|
| M27 | 27 | 3 | 0.433 | 25.051 | 23.319 | 23.752 | 1.84 | 1.624 | 24 |
M27 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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