Extension Springs

Extension springs absorb and store energy as well as create a resistance to a pulling force. Extension Springs are attached at both ends to other components. When these components move apart, the extension spring will pull components together again. Learn more about Extension Springs and How to Measure an Extension Spring.

Engineering Notes & Tolerances

Spring Material Specifications & Data

Spring Coatings and Surface Treatments

Results 5399 Springs

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Part Number	Outside Diameter (cm)	Outside Diameter (inch) Sort descending	Outside Diameter (mm)	Wire Diameter (cm)	Wire Diameter (inch)	Wire Diameter (mm)	Max Load (gm)	Max Load (kg)	Max Load (lb)	Max Load (n)	Rate (gm/cm)	Rate (gm/mm)	Rate (kg/cm)	Rate (kg/mm)	Rate (lb/inch)	Rate (N/cm)	Rate (N/mm)	Max Extended Length (cm)	Max Extended Length (inch)	Max Extended Length (mm)	Initial Tension (gm)	Initial Tension (kg)	Initial Tension (lb)	Initial Tension (N)	Free Length (cm)	Free Length (inch)	Free Length (mm)	Material
EI 011AA 02M	0.198	0.078	1.98	0.028	0.011	0.28	467.2	0.4672	1.03	4.582	752	75.2	0.752	0.0752	4.209	7.37	0.737	1.361	0.536	13.61	40.8	0.0408	0.09	0.4	0.795	0.313	7.95	MW
EI 011AA 01S316	0.198	0.078	1.98	0.028	0.011	0.28	293.9	0.2939	0.648	2.882	938	93.8	0.938	0.0938	5.251	9.2	0.92	0.912	0.359	9.12	34	0.034	0.075	0.334	0.635	0.25	6.35	SS 316
EI 011AA 01S	0.198	0.078	1.98	0.028	0.011	0.28	391.9	0.3919	0.864	3.843	938	93.8	0.938	0.0938	5.251	9.2	0.92	1.016	0.4	10.16	34	0.034	0.075	0.334	0.635	0.25	6.35	SS
EI 011AA 01M	0.198	0.078	1.98	0.028	0.011	0.28	467.2	0.4672	1.03	4.582	1125	112.5	1.125	0.1125	6.302	11.04	1.104	1.013	0.399	10.13	40.8	0.0408	0.09	0.4	0.635	0.25	6.35	MW
EI 007AA 01M	0.198	0.078	1.98	0.08	0.007	0.18	116.6	0.1166	0.257	1.143	109	10.9	0.109	0.0109	0.611	1.07	0.107	1.6	0.63	16	11.3	0.0113	0.025	0.111	0.635	0.25	6.35	MW
EI 007AA 01S	0.198	0.078	1.98	0.08	0.007	0.18	97.5	0.0975	0.215	0.956	91	9.1	0.091	0.0091	0.509	0.89	0.089	1.605	0.632	16.05	9.5	0.0095	0.021	0.093	0.635	0.25	6.35	SS
EI 007AA 01S316	0.198	0.078	1.98	0.08	0.007	0.18	73	0.073	0.161	0.716	91	9.1	0.091	0.0091	0.509	0.89	0.089	1.334	0.525	13.34	9.5	0.0095	0.021	0.093	0.635	0.25	6.35	SS 316
EI 007AA 03M	0.198	0.078	1.98	0.08	0.007	0.18	116.6	0.1166	0.257	1.143	52	5.2	0.052	0.0052	0.292	0.51	0.051	2.969	1.169	29.69	11.3	0.0113	0.025	0.111	0.953	0.375	9.53	MW
EI 007AA 02S316	0.198	0.078	1.98	0.08	0.007	0.18	73	0.073	0.161	0.716	59	5.9	0.059	0.0059	0.328	0.57	0.057	1.877	0.739	18.77	9.5	0.0095	0.021	0.093	0.795	0.313	7.95	SS 316
EI 007AA 02S	0.198	0.078	1.98	0.08	0.007	0.18	97.5	0.0975	0.215	0.956	59	5.9	0.059	0.0059	0.328	0.57	0.057	2.299	0.905	22.99	9.5	0.0095	0.021	0.093	0.795	0.313	7.95	SS
EI 007AA 02M	0.198	0.078	1.98	0.08	0.007	0.18	116.6	0.1166	0.257	1.143	70	7	0.07	0.007	0.394	0.69	0.069	2.291	0.902	22.91	11.3	0.0113	0.025	0.111	0.795	0.313	7.95	MW
EIM025A 03 M	0.201	0.079	2.01	0.025	0.01	0.25	343.4	0.3434	0.757	3.367	184	18.4	0.184	0.0184	1.032	1.81	0.181	3.216	1.266	32.16	27.2	0.0272	0.06	0.267	1.501	0.591	15.01	MW
EIM020A 03 M	0.201	0.079	2.01	0.02	0.008	0.2	173.3	0.1733	0.382	1.699	56	5.6	0.056	0.0056	0.312	0.55	0.055	4.364	1.718	43.64	13.6	0.0136	0.03	0.133	1.501	0.591	15.01	MW
EIM020A 05 M	0.201	0.079	2.01	0.02	0.008	0.2	173.3	0.1733	0.382	1.699	38	3.8	0.038	0.0038	0.215	0.38	0.038	6.144	2.419	61.44	13.6	0.0136	0.03	0.133	1.999	0.787	19.99	MW
EIM020A 04 S	0.201	0.079	2.01	0.02	0.008	0.2	145.2	0.1452	0.32	1.423	38	3.8	0.038	0.0038	0.212	0.37	0.037	5.281	2.079	52.81	11.3	0.0113	0.025	0.111	1.75	0.689	17.5	SS
EIM020A 04 M	0.201	0.079	2.01	0.02	0.008	0.2	173.3	0.1733	0.382	1.699	46	4.6	0.046	0.0046	0.255	0.45	0.045	5.255	2.069	52.55	13.6	0.0136	0.03	0.133	1.75	0.689	17.5	MW
EIM020A 03 S	0.201	0.079	2.01	0.02	0.008	0.2	145.2	0.1452	0.32	1.423	46	4.6	0.046	0.0046	0.26	0.46	0.046	4.387	1.727	43.87	11.3	0.0113	0.025	0.111	1.501	0.591	15.01	SS
EIM020A 02 M	0.201	0.079	2.01	0.02	0.008	0.2	173.3	0.1733	0.382	1.699	72	7.2	0.072	0.0072	0.401	0.7	0.07	3.475	1.368	34.75	13.6	0.0136	0.03	0.133	1.25	0.492	12.5	MW
EIM020A 01 S	0.201	0.079	2.01	0.02	0.008	0.2	145.2	0.1452	0.32	1.423	84	8.4	0.084	0.0084	0.47	0.82	0.082	2.596	1.022	25.96	11.3	0.0113	0.025	0.111	1.001	0.394	10.01	SS
EIM020A 05 S	0.201	0.079	2.01	0.02	0.008	0.2	145.2	0.1452	0.32	1.423	32	3.2	0.032	0.0032	0.18	0.32	0.032	6.175	2.431	61.75	11.3	0.0113	0.025	0.111	1.999	0.787	19.99	SS