Tapping drill / thread

Tap drill diameter from thread engagement - cutting and forming taps.

Metrisches Regelgewinde - Kernloch

Threads	Pitch	Drill	rechnerisch 75 %	Core Ø D1
M1	0.25 mm	0.75 mm	0.76 mm	0.729 mm
M1.2	0.25 mm	0.95 mm	0.96 mm	0.929 mm
M1.6	0.35 mm	1.25 mm	1.26 mm	1.221 mm
M2	0.4 mm	1.6 mm	1.61 mm	1.567 mm
M2.5	0.45 mm	2.05 mm	2.06 mm	2.013 mm
M3	0.5 mm	2.5 mm	2.51 mm	2.459 mm
M4	0.7 mm	3.3 mm	3.32 mm	3.242 mm
M5	0.8 mm	4.2 mm	4.22 mm	4.134 mm
M6	1.0 mm	5.0 mm	5.03 mm	4.918 mm
M8	1.25 mm	6.8 mm	6.78 mm	6.647 mm
M10	1.5 mm	8.5 mm	8.54 mm	8.376 mm
M12	1.75 mm	10.2 mm	10.3 mm	10.106 mm
M14	2.0 mm	12.0 mm	12.05 mm	11.835 mm
M16	2.0 mm	14.0 mm	14.05 mm	13.835 mm
M18	2.5 mm	15.5 mm	15.56 mm	15.294 mm
M20	2.5 mm	17.5 mm	17.56 mm	17.294 mm
M22	2.5 mm	19.5 mm	19.56 mm	19.294 mm
M24	3.0 mm	21.0 mm	21.08 mm	20.753 mm
M27	3.0 mm	24.0 mm	24.08 mm	23.753 mm
M30	3.5 mm	26.5 mm	26.59 mm	26.211 mm
M33	3.5 mm	29.5 mm	29.59 mm	29.211 mm
M36	4.0 mm	32.0 mm	32.1 mm	31.67 mm
M39	4.0 mm	35.0 mm	35.1 mm	34.67 mm
M42	4.5 mm	37.5 mm	37.62 mm	37.129 mm
M48	5.0 mm	43.0 mm	43.13 mm	42.587 mm
M56	5.5 mm	50.5 mm	50.64 mm	50.046 mm
M64	6.0 mm	58.0 mm	58.15 mm	57.505 mm

Die Spalte „Bohrer" ist der lagerübliche Kernlochbohrer aus der Bohrtabelle. Die Spalte daneben ist der Formelwert für 75 % Flankenanteil - eine amerikanische Konvention, die selten auf einen Bohrer trifft, den es gibt.

Note: all cutting and material values are guide values. The tool or machine manufacturer's recommendations are decisive.

The calculator also runs in the workshop without a connection: app and desktop version