A Class Fasteners

Steel 8.8	Zinc plated White	Zinc plated BICHRO	Stainless steel A2	Stainless steel A4	Alu
Yes	Yes	Yes	Yes	Yes	Yes

Steel

8.8

Zinc plated

White

Zinc plated

BICHRO

Stainless steel

Alu

Yes

d1	e min	h max	m	s
M 2	4.91	2.5	1.6	4.5
2.5 M	5.51	3.8	2	5
2.6 M	5.51	3.8	2	5
M 3	6.01	4	2.4	5.5
3.5 M	6.64	4.5	2.6	6
M4	7.66	5	2.9	7
M5	8.79	5	3.2	8
M6	11.05	6	4	10
M7	12.12	7.5	4.7	11
M8	14.38	8	5.5	13
M 10	18.9	10	6.5	17/16 *
M12	21.1	12	8	19/18 *
M14	24.49	14	9.5	22/21 *
M16	26.75	16	10.5	24
M18	29.56	18.5	13	27
M20	32.95	20	14	30
M22	35.03	22	15	32/34 *
M24	39.55	24	15	36
M 27	45.2	27	17	41
M 30	50.85	30	19	46
M 33	55.37	33	22	50
M 36	60.79	36	25	55
M 39	66.44	39	27	60
M 42	72.09	42	29	65
M 45	76.95	45	32	70
M 48	82.6	48	36	75
New European standard across flats according to ISO.