Question #6910   Submitted by Answiki on 10/14/2022 at 07:43:25 AM UTC

What diameter should we pre-drill for an M5 tap?

Answer   Submitted by Answiki on 07/25/2022 at 09:23:08 PM UTC

The pre-drilled diameter of an M5 x 0,90 thread is 4.1 mm.


The pre-drilled diameter for tapping is given by the drilling diameter minus the pitch. For a standard M5 x 0.90 tap, you need to drill to 5 - 0.9 = 4.1 mm.

3 events in history
Question by Answiki 10/14/2022 at 07:43:25 AM
What diameter should we pre-drill for an M5 tap?
Answer by Answiki on 07/25/2022 at 09:23:08 PM

The pre-drilled diameter of an M5 x 0,90 thread is 4.1 mm.


The pre-drilled diameter for tapping is given by the drilling diameter minus the pitch. For a standard M5 x 0.90 tap, you need to drill to 5 - 0.9 = 4.1 mm.

Question by Answiki 07/25/2022 at 09:21:43 PM
What diameter should I pre-drill for an M5 tap?
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