Precision Extension

Ultra Precision Extension Springs are made to strict tolerances from high-grade materials. Tight quality control is maintained throughout the manufacturing process.

Ends are full twist loops. Loop OD is the same as body OD.

Ultra-Precision Extension Springs have an excellent fatigue life and are ideal for dynamic or heavy cycle applications.

Other uses include maintenance, prototyping, and equipment repair.

All parts are stress-relieved.

SKU	OD (inches)	WD (inches)	Free (I.H.) Length (inches)	Rate (lbs/in)	Deflection (inches)	Load at Defl. (lbs)	Ext Len (inches)	Load at Defl. (N)
37059G	0.375	0.055	4.5	5.9	2.63	17.5	7.13	77.84
37060G	0.5	0.037	1.25	3	1.3	4.3	2.55	19.13
37061G	0.5	0.037	1.5	1.7	2.29	4.3	3.79	19.13
37062G	0.5	0.037	2	0.77	4.33	4.3	6.33	19.13
37063G	0.5	0.041	1.25	3.7	1.08	5.8	2.33	25.8
37064G	0.5	0.041	1.75	1.6	2.52	5.8	4.27	25.8
37065G	0.5	0.041	2.25	1.1	4.08	5.8	6.33	25.8
37066G	0.5	0.045	1.375	5.7	1.19	7.5	2.565	33.36
37067G	0.5	0.045	2	2.1	2.62	7.5	4.62	33.36
37068G	0.5	0.045	2.5	0.8	3.78	7.5	6.28	33.36
37069G	0.5	0.055	1.375	15.6	0.76	13.2	2.135	58.72
37070G	0.5	0.055	2.25	6.1	1.95	13.2	4.2	58.72
37071G	0.5	0.055	4.5	2.3	5.17	13.2	9.67	58.72
37072G	0.5	0.063	1.375	31.4	0.54	19	1.915	84.52
37073G	0.5	0.063	2.5	10.7	1.59	19	4.09	84.52
37074G	0.5	0.063	5	4.3	3.95	19	8.95	84.52
37075G	0.625	0.055	2	4.5	2.11	10.5	4.11	46.71
37076G	0.625	0.055	2.75	2.5	3.8	10.5	6.55	46.71
37077G	0.625	0.055	4	1.4	6.79	10.5	10.79	46.71
37078G	0.625	0.063	2	8.9	1.52	15	3.52	66.72
37079G	0.625	0.063	3	4.3	3.14	15	6.14	66.72
37080G	0.625	0.063	4.5	2.4	5.63	15	10.13	66.72
37081G	0.625	0.069	2	14.1	1.21	19	3.21	84.52
37082G	0.625	0.069	3	7.1	2.39	19	5.39	84.52
37083G	0.625	0.069	4.5	4	4.25	19	8.75	84.52
37084G	0.75	0.055	2	3.4	2.35	8.8	4.35	39.14
37085G	0.75	0.055	2.5	2	4	8.8	6.5	39.14
37086G	0.75	0.055	3.5	1	8	8.8	11.5	39.14
37087G	0.75	0.063	2	6.6	1.76	12.8	3.76	56.94
37088G	0.75	0.063	3	2.7	4.3	12.8	7.3	56.94
37089G	0.75	0.063	5	1.2	9.67	12.8	14.67	56.94
37090G	0.75	0.075	2	16.2	1.15	20.7	3.15	92.08
37091G	0.75	0.075	3	6.7	2.79	20.7	5.79	92.08
37092G	0.75	0.075	5	3.1	6.03	20.7	11.03	92.08
37000GS	0.063	0.007	0.25	0.87	0.21	0.211	0.459	0.94
37001GS	0.063	0.007	0.375	0.46	0.4	0.212	0.771	0.94
37002GS	0.063	0.007	0.5	0.31	0.58	0.212	1.083	0.95
37003GS	0.063	0.008	0.25	1.74	0.15	0.303	0.401	1.35
37004GS	0.063	0.008	0.5	0.64	0.18	0.153	0.676	0.68
37005GS	0.063	0.008	0.75	0.4	0.64	0.296	1.391	1.32
37006GS	0.063	0.009	0.25	3.22	0.11	0.407	0.358	1.81
37007GS	0.063	0.009	0.438	1.48	0.24	0.411	0.676	1.83
37008GS	0.063	0.009	0.75	0.75	0.47	0.41	1.218	1.82
37009GS	0.094	0.01	0.375	1.04	0.33	0.395	0.706	1.76
37010GS	0.094	0.01	0.5	0.66	0.52	0.392	1.018	1.75
37011GS	0.094	0.01	0.75	0.38	0.9	0.394	1.65	1.75
37012GS	0.094	0.012	0.375	2.78	0.2	0.661	0.577	2.94
37013GS	0.094	0.012	0.625	1.3	0.43	0.663	1.057	2.95
37014GS	0.094	0.012	1	0.71	0.79	0.664	1.792	2.96
37015GS	0.094	0.014	0.375	6.17	0.14	1.014	0.512	4.51
37016GS	0.094	0.014	0.625	2.95	0.28	1	0.906	4.45
37017GS	0.094	0.014	1	1.65	0.5	1.002	1.504	4.46
37018GS	0.125	0.016	1	1.3	0.67	1.073	1.67	4.77
37019GS	0.125	0.016	1.25	1.04	0.84	1.078	2.092	4.8
37020GS	0.125	0.016	1.5	0.78	1.12	1.078	2.623	4.8
37021GS	0.125	0.018	1	2.52	0.48	1.498	1.475	6.66
37022GS	0.125	0.018	1.375	1.74	0.68	1.489	2.059	6.62
37023GS	0.125	0.018	2	1.13	1.05	1.488	3.051	6.62
37024GS	0.125	0.02	1	4.43	0.35	1.964	1.353	8.73
37025GS	0.125	0.02	1.375	3.04	0.51	1.955	1.886	8.7
37026GS	0.125	0.02	2	2	0.78	1.969	2.785	8.76
37027GS	0.188	0.022	1	2.17	0.63	1.676	1.634	7.46
37028GS	0.188	0.022	1.375	1.39	0.99	1.682	2.369	7.48
37029GS	0.188	0.022	2	0.87	1.58	1.676	3.584	7.46
37030GS	0.188	0.026	1	5.3	0.45	2.866	1.446	12.75
37031GS	0.188	0.026	1.375	3.48	0.68	2.878	2.059	12.8
37032GS	0.188	0.026	2	2.17	1.09	2.878	3.094	12.8
37033GS	0.188	0.031	1	13.73	0.28	4.755	1.281	21.15
37034GS	0.188	0.031	1.5	7.99	0.48	4.757	1.982	21.16
37000G	0.063	0.007	0.25	1	0.29	0.32	0.54	1.42
37035GS	0.188	0.031	2.5	4.43	0.87	4.761	3.371	21.18
37001G	0.063	0.007	0.375	0.53	0.55	0.32	0.925	1.42
37036GS	0.25	0.026	1	2.43	0.69	2.082	1.691	9.26
37002G	0.063	0.007	0.5	0.36	0.81	0.32	1.31	1.42
37037GS	0.25	0.026	1.375	1.48	1.14	2.091	2.52	9.3
37003G	0.063	0.008	0.25	2	0.21	0.45	0.46	2
37038GS	0.25	0.026	2	0.87	1.94	2.089	3.944	9.29
37004G	0.063	0.008	0.5	0.74	0.25	0.45	0.745	2
37039GS	0.25	0.031	1	6	0.47	3.506	1.468	15.6
37005G	0.063	0.008	0.75	0.46	0.89	0.45	1.64	2
37040GS	0.25	0.031	1.5	3.3	0.85	3.506	2.35	15.59
37006G	0.063	0.009	0.25	3.7	0.15	0.62	0.4	2.76
37041GS	0.25	0.031	2.5	1.74	1.62	3.516	4.12	15.64
37007G	0.063	0.009	0.438	1.7	0.33	0.62	0.768	2.76
37042GS	0.25	0.037	1	15.38	0.3	5.651	1.302	25.14
37008G	0.063	0.009	0.75	0.86	0.65	0.62	1.4	2.76
37043GS	0.25	0.037	1.75	6.95	0.68	5.705	2.427	25.38
37009G	0.094	0.01	0.375	1.2	0.46	0.6	0.835	2.67
37044GS	0.25	0.037	3	3.56	1.32	5.694	4.318	25.33
37010G	0.094	0.01	0.5	0.76	0.72	0.6	1.22	2.67
37045GS	0.375	0.031	1	2.69	0.72	2.24	1.72	9.96
37011G	0.094	0.01	0.75	0.44	1.25	0.6	2	2.67
37046GS	0.375	0.031	1.25	1.56	1.24	2.237	2.488	9.95
37012G	0.094	0.012	0.375	3.2	0.28	1	0.655	4.45
37047GS	0.375	0.031	1.5	1.13	1.71	2.236	3.214	9.95
37013G	0.094	0.012	0.625	1.5	0.6	1	1.225	4.45
37048GS	0.375	0.037	1	6.69	0.48	3.88	1.475	17.26
37014G	0.094	0.012	1	0.82	1.1	1	2.1	4.45
37049GS	0.375	0.037	1.5	2.78	1.14	3.883	2.645	17.27
37015G	0.094	0.014	0.375	7.1	0.19	1.5	0.565	6.67
37050GS	0.375	0.037	2.5	1.22	2.62	3.888	5.121	17.3
37016G	0.094	0.014	0.625	3.4	0.39	1.5	1.015	6.67
37051GS	0.375	0.041	1	11.04	0.39	5.191	1.389	23.09
37017G	0.094	0.014	1	1.9	0.7	1.5	1.7	6.67
37052GS	0.375	0.041	1.75	3.65	1.18	5.21	2.931	23.17
37018G	0.125	0.016	1	1.5	0.93	1.6	1.93	7.12
37053GS	0.375	0.041	2.5	2.17	1.99	5.217	4.487	23.21
37019G	0.125	0.016	1.25	1.2	1.17	1.6	2.42	7.12
37054GS	0.375	0.045	1	17.55	0.32	6.761	1.317	30.07
37020G	0.125	0.016	1.5	0.9	1.56	1.6	3.06	7.12
37055GS	0.375	0.045	1.75	6.52	0.84	6.69	2.592	29.76
37021G	0.125	0.018	1	2.9	0.66	2.2	1.66	9.79
37056GS	0.375	0.045	3	2.78	1.98	6.706	4.98	29.83
37022G	0.125	0.018	1.375	2	0.95	2.2	2.325	9.79
37057GS	0.375	0.055	1.25	30.24	0.32	11.798	1.574	52.48
37023G	0.125	0.018	2	1.3	1.46	2.2	3.46	9.79
37058GS	0.375	0.055	2.25	12.08	0.81	11.741	3.056	52.22
37024G	0.125	0.02	1	5.1	0.49	2.9	1.49	12.9
37059GS	0.375	0.055	4.5	5.13	1.89	11.709	6.394	52.08
37025G	0.125	0.02	1.375	3.5	0.71	2.9	2.085	12.9
37060GS	0.5	0.037	1.25	2.61	0.94	2.84	2.186	12.63
37026G	0.125	0.02	2	2.3	1.09	2.9	3.09	12.9
37061GS	0.5	0.037	1.5	1.48	1.65	2.836	3.149	12.61
37027G	0.188	0.022	1	2.5	0.88	2.5	1.88	11.12
37062GS	0.5	0.037	2	0.67	3.12	2.486	5.118	11.06
37028G	0.188	0.022	1.375	1.6	1.38	2.5	2.755	11.12
37063GS	0.5	0.041	1.25	3.22	0.78	3	2.028	13.35
37029G	0.188	0.022	2	1	2.2	2.5	4.2	11.12
37064GS	0.5	0.041	1.75	1.39	1.81	3.023	3.564	13.45
37030G	0.188	0.026	1	6.1	0.62	4.3	1.62	19.13
37065GS	0.5	0.041	2.25	0.96	2.94	3.308	5.188	14.71
37031G	0.188	0.026	1.375	4	0.95	4.3	2.325	19.13
37066GS	0.5	0.045	1.375	4.95	0.86	4.944	2.232	21.99
37032G	0.188	0.026	2	2.5	1.52	4.3	3.52	19.13
37067GS	0.5	0.045	2	1.82	1.89	4.142	3.886	18.43
37033G	0.188	0.031	1	15.8	0.39	7	1.39	31.14
37068GS	0.5	0.045	2.5	0.7	2.72	2.592	5.222	11.53
37034G	0.188	0.031	1.5	9.2	0.67	7	2.17	31.14
37069GS	0.5	0.055	1.375	13.56	0.55	8.718	1.922	38.78
37035G	0.188	0.031	2.5	5.1	1.21	7	3.71	31.14
37070GS	0.5	0.055	2.25	5.3	1.4	8.742	3.654	38.89
37036G	0.25	0.026	1	2.8	0.96	3.1	1.96	13.79
37071GS	0.5	0.055	4.5	2	3.72	8.74	8.222	38.88
37037G	0.25	0.026	1.375	1.7	1.59	3.1	2.965	13.79
37072GS	0.5	0.063	1.375	27.29	0.39	12.609	1.764	56.09
37038G	0.25	0.026	2	1	2.7	3.1	4.7	13.79
37073GS	0.5	0.063	2.5	9.3	1.14	12.645	3.645	56.25
37039G	0.25	0.031	1	6.9	0.65	5.2	1.65	23.13
37074GS	0.5	0.063	5	3.74	2.84	12.627	7.844	56.17
37040G	0.25	0.031	1.5	3.8	1.18	5.2	2.68	23.13
37075GS	0.625	0.055	2	3.91	1.52	6.941	3.519	30.87
37041G	0.25	0.031	2.5	2	2.25	5.2	4.75	23.13
37076GS	0.625	0.055	2.75	2.17	2.74	6.944	5.486	30.89
37042G	0.25	0.037	1	17.7	0.42	8.5	1.42	37.81
37077GS	0.625	0.055	4	1.22	4.89	6.948	8.889	30.9
37043G	0.25	0.037	1.75	8	0.94	8.5	2.69	37.81
37078GS	0.625	0.063	2	7.73	1.09	9.964	3.094	44.32
37044G	0.25	0.037	3	4.1	1.83	8.5	4.83	37.81
37079GS	0.625	0.063	3	3.74	2.26	9.948	5.261	44.25
37045G	0.375	0.031	1	3.1	1	3.4	2	15.12
37080GS	0.625	0.063	4.5	2.09	4.05	9.954	8.554	44.28
37046G	0.375	0.031	1.25	1.8	1.72	3.4	2.97	15.12
37081GS	0.625	0.069	2	12.25	0.87	12.675	2.871	56.38
37047G	0.375	0.031	1.5	1.3	2.38	3.4	3.88	15.12
37082GS	0.625	0.069	3	6.17	1.72	12.617	4.721	56.12
37048G	0.375	0.037	1	7.7	0.66	5.8	1.66	25.8
37083GS	0.625	0.069	4.5	3.48	3.06	12.637	7.56	56.21
37049G	0.375	0.037	1.5	3.2	1.59	5.8	3.09	25.8
37084GS	0.75	0.055	2	2.95	1.69	5.799	3.692	25.8
37050G	0.375	0.037	2.5	1.4	3.64	5.8	6.14	25.8
37085GS	0.75	0.055	2.5	1.74	2.88	5.805	5.38	25.82
37051G	0.375	0.041	1	12.7	0.54	7.8	1.54	34.7
37086GS	0.75	0.055	3.5	0.87	5.76	5.805	9.26	25.82
37052G	0.375	0.041	1.75	4.2	1.64	7.8	3.39	34.7
37087GS	0.75	0.063	2	5.74	1.27	8.468	3.267	37.67
37053G	0.375	0.041	2.5	2.5	2.76	7.8	5.26	34.7
37088GS	0.75	0.063	3	2.35	3.1	8.464	6.096	37.65
37054G	0.375	0.045	1	20.2	0.44	10	1.44	44.48
37089GS	0.75	0.063	5	1.04	6.96	8.46	11.962	37.63
37055G	0.375	0.045	1.75	7.5	1.17	10	2.92	44.48
37090GS	0.75	0.075	2	14.08	0.83	13.656	2.828	60.75
37056G	0.375	0.045	3	3.2	2.75	10	5.75	44.48
37091GS	0.75	0.075	3	5.82	2.01	13.696	5.009	60.92
37057G	0.375	0.055	1.25	34.8	0.45	17.5	1.7	77.84
37092GS	0.75	0.075	5	2.69	4.34	13.696	9.342	60.92
37058G	0.375	0.055	2.25	13.9	1.12	17.5	3.37	77.84