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
LE 034B 11 S	0.478	0.188	4.78	0.086	0.034	0.86	3400.6	3.4006	7.497	33.348	1429	142.9	1.429	0.1429	8	14.01	1.401	7.849	3.09	78.49	340.1	0.3401	0.7497	3.335	5.715	2.25	57.15	SS
LE 034B 11 M	0.478	0.188	4.78	0.086	0.034	0.86	4082.4	4.0824	9	40.034	1714	171.4	1.714	0.1714	9.6	16.81	1.681	7.849	3.09	78.49	408.2	0.4082	0.9	4.003	5.715	2.25	57.15	MW
LE 034B 06 S	0.478	0.188	4.78	0.086	0.034	0.86	3400.6	3.4006	7.497	33.348	2872	287.2	2.872	0.2872	16.08	28.16	2.816	4.242	1.67	42.42	340.1	0.3401	0.7497	3.335	3.175	1.25	31.75	SS
LE 034B 02 M	0.478	0.188	4.78	0.086	0.034	0.86	4082.4	4.0824	9	40.034	7143	714.3	7.143	0.7143	40	70.05	7.005	2.413	0.95	24.13	408.2	0.4082	0.9	4.003	1.905	0.75	19.05	MW
LE 034B 02 S	0.478	0.188	4.78	0.086	0.034	0.86	3400.6	3.4006	7.497	33.348	5950	595	5.95	0.595	33.32	58.35	5.835	2.413	0.95	24.13	340.1	0.3401	0.7497	3.335	1.905	0.75	19.05	SS
LE 034B 02 S316	0.478	0.188	4.78	0.086	0.034	0.86	2550.1	2.5501	5.622	25.008	5950	595	5.95	0.595	33.32	58.35	5.835	2.276	0.896	22.76	340.1	0.3401	0.7497	3.335	1.905	0.75	19.05	SS 316
LE 034B 03 M	0.478	0.188	4.78	0.086	0.034	0.86	4082.4	4.0824	9	40.034	5536	553.6	5.536	0.5536	31	54.29	5.429	2.883	1.135	28.83	408.2	0.4082	0.9	4.003	2.223	0.875	22.23	MW
LE 034B 03 S	0.478	0.188	4.78	0.086	0.034	0.86	3400.6	3.4006	7.497	33.348	4611	461.1	4.611	0.4611	25.82	45.22	4.522	2.883	1.135	28.83	340.1	0.3401	0.7497	3.335	2.223	0.875	22.23	SS
LE 034B 03 S316	0.478	0.188	4.78	0.086	0.034	0.86	2550.1	2.5501	5.622	25.008	4611	461.1	4.611	0.4611	25.82	45.22	4.522	2.7	1.063	27	340.1	0.3401	0.7497	3.335	2.223	0.875	22.23	SS 316
LE 034B 04 M	0.478	0.188	4.78	0.086	0.034	0.86	4082.4	4.0824	9	40.034	4643	464.3	4.643	0.4643	26	45.53	4.553	3.327	1.31	33.27	408.2	0.4082	0.9	4.003	2.54	1	25.4	MW
LE 034B 04 S	0.478	0.188	4.78	0.086	0.034	0.86	3400.6	3.4006	7.497	33.348	3868	386.8	3.868	0.3868	21.66	37.93	3.793	3.327	1.31	33.27	340.1	0.3401	0.7497	3.335	2.54	1	25.4	SS
LE 034B 04 S316	0.478	0.188	4.78	0.086	0.034	0.86	2550.1	2.5501	5.622	25.008	3868	386.8	3.868	0.3868	21.66	37.93	3.793	3.109	1.224	31.09	340.1	0.3401	0.7497	3.335	2.54	1	25.4	SS 316
LE 034B 05 M	0.478	0.188	4.78	0.086	0.034	0.86	4082.4	4.0824	9	40.034	4000	400	4	0.4	22.4	39.23	3.923	3.772	1.485	37.72	408.2	0.4082	0.9	4.003	2.858	1.125	28.58	MW
LE 034B 05 S	0.478	0.188	4.78	0.086	0.034	0.86	3400.6	3.4006	7.497	33.348	3332	333.2	3.332	0.3332	18.66	32.68	3.268	3.772	1.485	37.72	340.1	0.3401	0.7497	3.335	2.858	1.125	28.58	SS
LE 034B 05 S316	0.478	0.188	4.78	0.086	0.034	0.86	2550.1	2.5501	5.622	25.008	3332	333.2	3.332	0.3332	18.66	32.68	3.268	3.52	1.386	35.2	340.1	0.3401	0.7497	3.335	2.858	1.125	28.58	SS 316
LE 034B 06 M	0.478	0.188	4.78	0.086	0.034	0.86	4082.4	4.0824	9	40.034	3447	344.7	3.447	0.3447	19.3	33.8	3.38	4.242	1.67	42.42	408.2	0.4082	0.9	4.003	3.175	1.25	31.75	MW
LE 034B 09 M	0.478	0.188	4.78	0.086	0.034	0.86	4082.4	4.0824	9	40.034	2304	230.4	2.304	0.2304	12.9	22.59	2.259	6.045	2.38	60.45	408.2	0.4082	0.9	4.003	4.445	1.75	44.45	MW
LE 034B 09 S	0.478	0.188	4.78	0.086	0.034	0.86	3400.6	3.4006	7.497	33.348	1920	192	1.92	0.192	10.75	18.83	1.883	6.045	2.38	60.45	340.1	0.3401	0.7497	3.335	4.445	1.75	44.45	SS
LE 034B 09 S316	0.478	0.188	4.78	0.086	0.034	0.86	2550.1	2.5501	5.622	25.008	1920	192	1.92	0.192	10.75	18.83	1.883	5.596	2.203	55.96	340.1	0.3401	0.7497	3.335	4.445	1.75	44.45	SS 316
LE 034B 08 S316	0.478	0.188	4.78	0.086	0.034	0.86	2550.1	2.5501	5.622	25.008	2305	230.5	2.305	0.2305	12.91	22.61	2.261	4.768	1.877	47.68	340.1	0.3401	0.7497	3.335	3.81	1.5	38.1	SS 316