Dimensions for ISO 8748 Spiral dowel pins, heavy duty

d1			d2	a	s	Min. shear strength, double, kN
nom.	before mounting max	min	before mounting max.	=		a	b
1.5	1.71	1.61	1.4	0.5	0.17	1.9	1.45
2	2.21	2.11	1.9	0.7	0.22	3.5	2.5
2.5	2.73	2.62	2.4	0.7	0.28	5.5	3.8
3	3.25	3.12	2.9	0.9	0.33	7.6	5.7
3.5	3.79	3.64	3.4	1	0.39	10	7.6
4	4.3	4.15	3.9	1.1	0.45	13.5	10
5	5.35	5.15	4.85	1.3	0.56	20	15.5
6	6.4	6.18	5.85	1.5	0.67	30	23
8	8.55	8.25	7.8	2	0.9	53	41
10	10.65	10.3	9.75	2.5	1.1	84	64
12	12.75	12.35	11.7	3	1.3	120	91
14	14.85	14.4	13.6	3.5	1.6	165	-
16	16.9	16.4	15.6	4	1.8	210	-
20	21	20.4	19.6	4.5	2.2	340	-