M68 Metric Thread Dimensions and Pitch
Below are the key dimensions for M68 metric threads: pitch, tap drill and clearance drill according to ISO 724:2023.
M68 Coarse (standard) |
|---|
| M68 Pitch: 6mm |
| M68 Tap Drill: 62mm |
| M68 Clearance Drill: 74mm |
M68 Metric Thread
Welcome to our M68 Metric Thread Page, your indispensable hub for immediate assessments on M68 metric threads. We've gathered an extensive database for all the standard metric threads you'll need for your components, focusing on critical dimensions such as thread pitch, tap drill, and clearance drill. This page is a comprehensive solution for engineers, machinists, and hobbyists seeking accurate, reliable data.
M68 Coarse Pitch Dimensions
| Nominal Size | d=D | p | r | d2=D2 | d3 | D1 | h3 | H1 | Tap Drill |
|---|---|---|---|---|---|---|---|---|---|
| M68 | 68 | 6 | 0.866 | 64.103 | 60.639 | 61.505 | 3.681 | 3.248 | 62 |
M68 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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