M5 Tapped Hole Drill Size — 4.2 mm

To tap an M5 thread (pitch 0.8 mm), drill a 4.2 mm hole for standard 6H tolerance. Use 4.3 mm for a looser 7H fit.

Tolerance class	Drill diameter	Pitch	Thread depth
6H (standard)	4.2 mm	0.8 mm	6–10 mm
7H (loose)	4.3 mm	0.8 mm	6–10 mm
4H (tight)	4.1 mm	0.8 mm	6–10 mm

Fine pitch M5×0.5 variant available in Handbook Locksmith app.

FAQ

4.2 mm for standard M5 thread (6H, pitch 0.8 mm).

Диаметр отверстия 4,2 мм под резьбу М5 с шагом 0,8 мм (допуск 6H).

Свердло 4,2 мм для різьби М5 з кроком 0,8 мм (допуск 6H).

Full M5 thread data in the app
Profile viewer, tolerance calculator, 28 thread types