Dimensions of retaining rings for shafts (extract from DIN 6979)

Size d₂	d₁		s	a	m	n (min)	d₃ (max)
Size d₂	Max	Min	s	a	m	n (min)	d₃ (max)
4	5	7	0.7	3.34	0.74	1.2	9.3
6	6	8	0.7	4.11	0.74	1.2	11.3
7	8	11	0.9	5.84	0.94	1.5	14.3
8	9	12	1	6.52	1.05	1.8	16.3
9	10	14	1.1	7.63	1.15	2	18.8
10	11	15	1.2	8.32	1.25	2	20.4
12	13	18	1.3	10.45	1.35	2.5	23.4
15	16	24	1.5	12.61	1.55	3	29.4
19	20	31	1.75	15.92	1.8	3.5	37.6
24	25	38	2	21.88	2.05	4	44.6

Retaining ring for shaft d₂ DIN 6979 (e.g. Retaining ring for shaft 10 DIN 6979).