M16 Metric Thread
M16 Metric Thread Dimensions and Pitch
Below are the key dimensions for M16 metric threads: pitch, tap drill and clearance drill according to ISO 724:2023.
M16 Coarse (standard)
Welcome to our M16 Metric Thread Page, your go-to resource for swift measurements on M16 metric threads. We've gathered an expansive library of data for all standard metric threads you'll utilise in your parts, highlighting important dimensions like thread pitch, tap drill, and clearance drill. This page is a complete solution for engineers, machinists, and hobbyists seeking reliable and precise data.
M16 Coarse Pitch Dimensions
Nominal Size
d=D
p
r
d2=D2
d3
D1
h3
H1
Tap Drill
M16
16
2
0.289
14.701
13.546
13.835
1.227
1.083
14
All dimensions stated in are mm (millimetre)
M16 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 M16 thread?
The pitch for an M16 thread is 2 mm.
What is the tap drill for an M16 thread?
The tap drill for an M16 thread is 14 mm.
What size is a clearance hole for an M16 thread?
The clearance drill for an M16 thread is 17.5 mm.
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