Circlips

Introduction

DIN 471

A circlip, also known as a "snap ring," is a type of fastener that is used to secure or retain components within a machine or device. It consists of a flexible ring with a gap in the circumference, which allows it to be easily installed and removed from a shaft or other cylindrical component. Circlips are commonly made of strong and durable materials such as spring steel, and are available in a range of sizes to suit different applications. Circlips are used to prevent components from moving or separating from their intended location, and are often used in applications where a high level of security or reliability is required. They are commonly used in the automotive, aerospace, and construction industries, and can be installed using specialized tools such as circlip pliers or a snap ring installation tool. Circlips are often preferred over other types of fasteners due to their ease of installation and removal, and their ability to be re-used in certain situations.

D1	S	D3
M3	0.4	2.7
M4	0.4	3.7
M5	0.6	4.7
M6	0.7	5.6
M7	0.8	6.5
M8	0.8	7.4
M9	1	8.4
M10	1	9.3
M11	1	10.2
M12	1	11
M13	1	11.9
M14	1	12.9
M15	1	13.8
M16	1	14.7
M17	1	15.7
M18	1.2	16.5
M19	1.2	17.5
M20	1.2	18.5
M21	1.2	19.5
M22	1.2	20.5
M23	1.2	21.4
M24	1.2	22.2
M25	1.2	23.2
M26	1.2	24.2
M27	1.2	25.1
M28	1.5	25.9
M29	1.5	26.9
M30	1.5	27.9
M31	1.5	28.7
M32	1.5	29.6
M33	1.5	30.5
M34	1.5	31.5
M35	1.5	32.2
M36	1.75	33.2
M37	1.75	34.2
M38	1.75	35.2
M39	1.75	35.8
M40	1.75	36.5
M41	1.75	37.5
M42	1.75	38.5
M44	1.75	40.5
M45	1.75	41.5
M46	1.75	42.5
M47	1.75	43.5
M48	1.75	44.5
M50	2	45.8
M52	2	47.8
M54	2	49.8
M55	2	50.8
M56	2	51.8
M57	2	52.8
M58	2	53.8
M60	2	55.8
M62	2	57.8
M63	2	58.8
M65	2.5	60.8
M67	2.5	62.6
M68	2.5	63.5
M70	2.5	65.5
M72	2.5	67.5
M75	2.5	70.5
M77	2.5	72.5
M78	2.5	73.5
M80	2.5	74.5
M82	2.5	76.5
M85	3	79.5
M87	3	81.5
M88	3	82.5
M90	3	84.5
M92	3	84.5
M95	3	89.5
M97	3	89.5
M98	3	89.5
M100	3	94.5
M102	3	94.5
M105	4	98
M107	4	98
M108	4	98
M110	4	103
M112	4	103
M115	4	108
M117	4	108
M118	4	108
M120	4	113
M122	4	113
M125	4	118
M127	4	118
M128	4	118
M130	4	123
M132	4	123
M135	4	128
M137	4	128
M138	4	128
M140	4	133
M142	4	133
M145	4	138
M147	4	138
M148	4	138
M150	4	142
M152	4	142
M155	4	146
M157	4	146
M158	4	146
M160	4	151
M162	4	151

DIN 472

D1	S	D3
M8	0.8	8.7
M9	0.8	9.8
M10	1	10.8
M11	1	11.8
M12	1	13
M13	1	14.1
M14	1	15.1
M15	1	16.2
M16	1	17.3
M17	1	18.3
M18	1	19.5
M19	1	20.5
M20	1	21.5
M21	1	22.5
M22	1	23.5
M23	1	24.6
M24	1.2	25.6
M25	1.2	26.9
M26	1.2	27.9
M27	1.2	28.9
M28	1.2	30.1
M29	1.2	31.1
M30	1.2	32.1
M31	1.2	33.4
M32	1.2	34.4
M33	1.2	35.4
M34	1.5	36.5
M35	1.5	37.8
M36	1.5	38.8
M37	1.5	39.8
M38	1.5	40.8
M39	1.5	42.1
M40	1.75	43.5
M41	1.75	44.5
M42	1.75	45.5
M43	1.75	46.5
M44	1.75	47.5
M45	1.75	48.5
M46	1.75	49.5
M47	1.75	50.5
M48	1.75	51.1
M50	2	54.2
M51	2	55.2
M52	2	56.2
M53	2	57.2
M54	2	58.2
M55	2	59.2
M56	2	60.2
M57	2	61.2
M58	2	62.2
M60	2	64.2
M62	2	66.2
M63	2	67.2
M65	2.5	69.2
M67	2.5	70.2
M68	2.5	72.5
M70	2.5	74.5
M72	2.5	76.5
M75	2.5	79.5
M77	2.5	80.5
M78	2.5	82.5
M80	2.5	85.5
M82	2.5	87.5
M85	3	90.5
M87	3	92.5
M88	3	93.5
M90	3	95.5
M92	3	97.5
M95	3	100.5
M97	3	102.5
M98	3	103.5
M100	3	105.5
M102	4	108
M105	4	112
M107	4	114
M108	4	115
M110	4	117
M112	4	119
M115	4	122
M117	4	122
M118	4	122
M120	4	127
M122	4	127
M125	4	132
M127	4	132
M128	4	132
M130	4	137
M132	4	137
M135	4	142
M137	4	142
M138	4	142
M140	4	147
M142	4	147
M145	4	152
M147	4	152
M148	4	152
M150	4	158
M152	4	158
M155	4	164
M157	4	164
M158	4	164
M160	4	169
M162	4	169

DIN 6799

d1	d2 max.	s	Tol.	d3		d4	m	Tol.	n min.
d1	d2 max.	s	Tol.	from	to	Tol. h11	m	Tol.	n min.
0.8	2.25	0.2	±0.02	1	1.4	0.8	0.24	+0.04 0	0.4
1.2	3.25	0.3		1.4	2	1.2	0.34		0.6
1.5	4.25	0.4		2	2.5	1.5	0.44		0.8
1.9	4.8	0.5		2.5	3	1.9	0.54	+0.05 0	1
2.3	6.3	0.6		3	4	2.3	0.64		1
3.2	7.3	0.6		4	5	3.2	0.64		1
4	9.3	0.7		5	7	4	0.74		1.2
5	11.3	0.7		6	8	5	0.74		1.2
6	12.3	0.7		7	9	6	0.74		1.2
7	14.3	0.9	±0.03	8	11	7	0.94		1.5
8	16.3	1		9	12	8	1.05	+0.08 0	1.8
9	18.8	1.1		10	14	9	1.15		2
10	20.4	1.2		11	15	10	1.25		2
12	23.4	1.3		13	18	12	1.35		2.5
15	29.4	1.5		16	24	15	1.55		3
19	37.6	1.75		20	31	19	1.8		3.5
24	44.6	2		25	38	24	2.05		4
30	52.6	2.5		32	42	30	2.55		4.5

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