ISO Metric Thread DIN 14-2

Metric ISO Thread with a nominal diameter of less than 1 mm. It is used, for example, in precision mechanics.
The term consists of the letter M, the nominal diameter and the pitch, the thread angle is 60°.

Nominal Diameter mm	Pitch mm	Tapping Drill Size mm
M 0.30	0.080	0.223
M 0.35	0.090	0.264
M 0.40	0.100	0.304
M 0.50	0.125	0.380
M 0.60	0.150	0.456
M 0.70	0.175	0.532
M 0.80	0.200	0.608
M 0.90	0.225	0.684