Question #6572   Submitted by Answiki on 09/05/2022 at 08:50:20 PM UTC

What diameter should I pre-drill for an M4 tap?

Answer   Submitted by Answiki on 09/05/2022 at 08:51:17 PM UTC

The pre-drilled diameter of an M4 x 0,70 thread is 3.3 mm.


The pre-drilled diameter for tapping is given by the drilling diameter minus the pitch. For a standard M4 x 0.70 tap, you need to drill to 4 - 0.7 = 3.3 mm.

Log in or sign up to update this answer Login Signup
3 events in history
Answer by Answiki on 09/05/2022 at 08:51:17 PM

The pre-drilled diameter of an M4 x 0,70 thread is 3.3 mm.


The pre-drilled diameter for tapping is given by the drilling diameter minus the pitch. For a standard M4 x 0.70 tap, you need to drill to 4 - 0.7 = 3.3 mm.

Question by Answiki 09/05/2022 at 08:50:27 PM
What diameter should we pre-drill for an M4 tap?
Question by Answiki 09/05/2022 at 08:50:20 PM
What diameter should I pre-drill for an M4 tap?
# ID Query URL Count
Icons proudly provided by Friconix.