D1500 and N1500 Circlips

A circlip is a type of retaining ring or fastener that takes the form of a flexible, open-ended ring, made from metal. They may also be known as retaining rings, snap rings, c-clips, or Jesus clips.

Most applications which need a part to pivot, spin, or turn, where a bearing is used, will need a circlip or lock ring fastening. Circlips are commonly used in motors, turbines and pistons.

Circlips fit into a groove on the inside of a bore or the outside of a shaft. They work as a load-bearing shoulder which positions and holds mechanical parts. They provide continuous radial force and are secure against high rotational speeds because they are retained within the groove.

The charts below gives the dimensions for D1500 Metric E Clips and N1500 Imperial E Clips to DIN 6799 and BS 3673:2.

Dimensions shown are in Inches and mm if you wish to convert them, please use our universal converter.

D1500 METRIC E CLIP DIMENSIONS - DIN 6799

Reference Number	Nominal Diameter (D1)	Shaft Range		Ring Dimensions					Groove Dimensions
		From	To	Thickness (T)	Tolerance	Unstressed Outside Diameter (D3)	Unstressed Internal Diameter (D4)	Tolerance	Groove Diameter (D2)	Tolerance	Groove Width (G)
D1500-0012	1.2	1.4	2	0.3	± 0.02	2.9	1.01	± 0.040	1.2	-0.06	0.34
D1500-0015	1.5	2	2.5	0.4	± 0.02	3.9	1.28	± 0.040	1.5	-0.06	0.44
D1500-0019	1.9	2.5	3	0.5	± 0.02	4.4	1.61	± 0.040	1.9	-0.06	0.54
D1500-0023	2.3	3	4	0.6	± 0.02	5.9	1.94	± 0.040	2.3	-0.06	0.64
D1500-0032	3.2	4	5	0.6	± 0.02	6.9	2.7	± 0.040	3.2	-0.075	0.64
D1500-0040	4	5	7	0.7	± 0.02	8.85	3.34	± 0.048	4	-0.075	0.74
D1500-0050	5	6	8	0.7	± 0.02	10.85	4.11	± 0.048	5	-0.075	0.74
D1500-0060	6	7	9	0.7	± 0.02	11.8	5.26	± 0.058	6	-0.075	0.74
D1500-0070	7	8	11	0.9	± 0.02	13.8	5.84	± 0.058	7	-0.09	0.94
D1500-0080	8	9	12	1	± 0.03	15.75	6.52	± 0.058	8	-0.09	1.05
D1500-0090	9	10	14	1.1	± 0.03	18.2	7.63	± 0.058	9	-0.09	1.15
D1500-0100	10	11	15	1.2	± 0.03	19.7	8.32	± 0.058	10	-0.09	1.25
D1500-0120	12	13	18	1.3	± 0.03	22.7	10.45	± 0.070	12	-0.11	1.35
D1500-0150	15	16	24	1.5	± 0.03	28.7	12.61	± 0.070	15	-0.11	1.55
D1500-0190	19	20	31	1.75	± 0.03	36.5	15.92	± 0.084	19	-0.13	1.8

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N1500 - IMPERIAL E CLIP DIMENSIONS - BS 3673:2

Reference Number	Ring Dimensions				Groove Dimensions
	Nominal Diameter (D1)	Thickness (T)	Tolerance	Unstressed Outside Diameter (D3)	Groove Diameter (D2)	Tolerance	Groove Width (G)	Tolerance
N1500-X004	0.04	0.01	± 0.001	0.079	0.026	0.002	0.012	0.002
N1500-X006	0.062	0.01	± 0.001	0.14	0.052	0.002	0.012	0.002
N1500-0006	0.062	0.01	± 0.001	0.156	0.052	0.002	0.012	0.002
N1500-Y006	0.062	0.02	± 0.002	0.187	0.052	0.002	0.023	0.002
N1500-X009	0.094	0.015	± 0.002	0.23	0.074	0.002	0.018	0.002
N1500-0009	0.094	0.015	± 0.002	0.187	0.074	0.002	0.018	0.002
N1500-X011	0.11	0.015	± 0.002	0.375	0.079	0.002	0.018	0.002
N1500-0012	0.125	0.015	± 0.002	0.23	0.095	0.002	0.018	0.002
N1500-X014	0.14	0.015	± 0.002	0.203	0.102	0.002	0.018	0.002
N1500-Y014	0.14	0.015	± 0.002	0.25	0.11	0.002	0.018	0.002
N1500-0014	0.14	0.025	± 0.002	0.27	0.105	0.002	0.029	0.003
N1500-0015	0.156	0.025	± 0.002	0.282	0.116	0.002	0.029	0.003
N1500-X017	0.172	0.025	± 0.002	0.312	0.127	0.002	0.029	0.003
N1500-X018	0.188	0.025	± 0.002	0.375	0.125	0.002	0.029	0.003
N1500-0018	0.188	0.025	± 0.002	0.335	0.147	0.002	0.029	0.003
N1500-X021	0.219	0.025	± 0.002	0.437	0.188	0.002	0.029	0.003
N1500-0025	0.25	0.025	± 0.002	0.527	0.21	0.003	0.029	0.003
N1500-X031	0.312	0.025	± 0.002	0.5	0.25	0.003	0.029	0.003
N1500-0037	0.375	0.035	± 0.002	0.66	0.303	0.003	0.039	0.003
N1500-0043	0.438	0.035	± 0.002	0.687	0.343	0.003	0.039	0.003
N1500-X043	0.438	0.035	± 0.002	0.6	0.38	0.003	0.039	0.003
N1500-0050	0.5	0.042	± 0.002	0.8	0.396	0.003	0.046	0.003
N1500-0062	0.625	0.042	± 0.002	0.94	0.485	0.003	0.046	0.003
N1500-X074	0.744	0.05	± 0.002	1	0.625	0.003	0.056	0.003
N1500-0075	0.75	0.05	± 0.002	1.12	0.58	0.003	0.056	0.003
N1500-0087	0.875	0.05	± 0.002	1.3	0.675	0.003	0.056	0.003
N1500-X098	0.984	0.05	± 0.002	1.5	0.835	0.005	0.056	0.003
N1500-X118	1.188	0.062	± 0.003	1.626	1.079	0.005	0.068	0.004
N1500-X137	1.375	0.062	± 0.003	1.875	1.23	0.005	0.068	0.004