M64 Metric Thread
M64 Metric Thread Dimensions and Pitch
Below are the key dimensions for M64 metric threads: pitch, tap drill and clearance drill according to ISO 724:2023.
M64 Coarse (standard)
Explore our M64 Metric Thread Page, your ultimate resource for quick measurements on M64 metric threads. We've compiled an extensive library of data for all common metric threads you'll employ in your parts, highlighting important dimensions like thread pitch, tap drill, and clearance drill. This page serves as a one-stop-shop for professionals and hobbyists seeking dependable, accurate information.
M64 Coarse Pitch Dimensions
Nominal Size
d=D
p
r
d2=D2
d3
D1
h3
H1
Tap Drill
M64
64
6
0.866
60.103
56.639
57.505
3.681
3.248
58
All dimensions stated in are mm (millimetre)
M64 Fine Pitch Dimensions
All dimensions stated in are mm (millimetre)
ISO Metric Thread profile
d=D: Major Diameter
p: Pitch
r: Root Radius
d2=D2: Pitch Diameter
d3: Minor Diameter Male Thread
D1: Minor Diameter Female Thread
h3: Thread Height Male
H1: Thread Height Female
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
What is the pitch of an M64 thread?
The pitch for an M64 thread is 6 mm.
What is the tap drill for an M64 thread?
The tap drill for an M64 thread is 58 mm.
What size is a clearance hole for an M64 thread?
The clearance drill for an M64 thread is 70 mm.
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