Dimensions for UNI 8839 Split Spring Washers, Curved, Form A

Nominal size	For thread	d1 min.	d1 max.	b	s	h min.	h max.	r	Weight kg/1000pcs
2	M2	2.1	2.4	0.9 ± 0.1	0.5 ± 0.1	0.7	0.9	0.1	0.035
2.5	M2.5	2.6	2.9	1 ± 0.1	0.6 ± 0.1	0.9	1.1	0.1	0.055
3	M3	3.1	3.4	1.3 ± 0.1	0.7 ± 0.1	1.1	1.3	0.1	0.09
3.5	M3.5	3.6	3.9	1.3 ± 0.1	0.7 ± 0.1	1.1	1.3	0.1	0.1
4	M4	4.1	4.4	1.5 ± 0.1	0.8 ± 0.1	1.2	1.4	0.2	0.15
5	M5	5.1	5.4	1.8 ± 0.1	1 ± 0.1	1.5	1.7	0.2	0.3
6	M6	6.1	6.5	2.5 ± 0.15	1.3 ± 0.1	2	2.2	0.3	0.7
7	M7	7.1	7.5	2.5 ± 0.15	1.3 ± 0.1	2	2.2	0.3	0.75
8	M8	8.1	8.5	3 ± 0.15	1.6 ± 0.1	2.45	2.75	0.5	1.3
10	M10	10.2	10.7	3.5 ± 0.2	1.8 ± 0.1	2.85	3.15	0.5	2.1
12	M12	12.2	12.7	4 ± 0.2	2.1 ± 0.15	3.35	3.65	1	3.2
14	M14	14.2	14.7	4.5 ± 0.2	2.4 ± 0.15	3.9	4.3	1	4.8
16	M16	16.2	17	5 ± 0.2	2.8 ± 0.15	4.5	5.1	1	7
18	M18	18.2	19	5 ± 0.2	2.8 ± 0.15	4.5	5.1	1	7.8
20	M20	20.2	21.2	6 ± 0.2	3.2 ± 0.2	5.1	5.9	1	12.2
22	M22	22.5	23.5	6 ± 0.2	3.2 ± 0.2	5.1	5.9	1	13.3
24	M24	24.5	25.5	7 ± 0.25	4 ± 0.2	6.5	7.5	1.6	21.5
27	M27	27.5	28.5	7 ± 0.25	4 ± 0.2	6.5	7.5	1.6	23.7
30	M30	30.5	31.7	8 ± 0.25	6 ± 0.2	9.5	10.5	1.6	42.5
36	M36	36.5	37.7	10 ± 0.25	6 ± 0.2	10.3	11.3	1.6	68