0.4 mm

For 0.4 mm, record type is drill_decimal; tap drill or decimal size is .0157, recorded from its source on 2026-08-28; source re-checked 2026-09-15.

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

.40 | .0157"

— newmantools.com, retrieved 2026-08-28

Source

• newmantools.comhttp://newmantools.com/decinch.htm

Last verified against source: 2026-09-15. Due for re-check by 2031-08-27. This page as Markdown · OKF bundle · full dataset as JSON.