DIN 6325 Specifications

Fasteners, Best Quality Fasteners

All measurements in millimeters (mm)

d	a approx.	z approx.
M0.8	0.46	0.12
M1	0.48	0.15
M1.5	0.62	0.23
M2	0.78	0.3
M2.5	0.95	0.4
M3	1.1	0.45
M4	1.4	0.6
M5	1.7	0.75
M6	2.1	0.9
M8	2.6	1.2
M10	3	1.5
M12	3.8	1.8
M14	3.8	2
M16	4.7	2.5
M20	6	3

ISO-Tolerances for Metric Fasteners

Nomimal Dimension		Tolerance Zone in mm (external measurements)
Over	To	h6		h8		m6
0	1	0	-0.006	0	-0.014	+0.002	+0.008
1	3	0	-0.006	0	-0.014	+0.002	+0.008
3	6	0	-0.008	0	-0.018	+0.004	+0.012
6	10	0	-0.009	0	-0.022	+0.006	+0.015
10	18	0	-0.011	0	-0.027	+0.007	+0.018
18	30	0	-0.030	0	-0.033	+0.008	+0.021

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