Compression Springs

Variable-Diameter Compression Springs

Custom variable-diameter compression springs manufactured to your dimensions, load requirements, material and drawing.

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Reference configurations: 105
Wire diameter: 0.2-12 mm
Outside diameter: 2.33-138.71 mm
Free length: 2.54-390.72 mm

Custom Variable-Diameter Compression Springs

CustomSprings manufactures variable-diameter compression springs to match your dimensional, load, cycle-life and environmental requirements. The catalog values below are reference configurations that help define a request; final production specifications are confirmed against your drawing or application data.

Information Needed for a Quote

Send the wire diameter, outside or inside diameter, free length, working load or spring rate, material, end configuration, operating environment and required quantity. Uploading a PDF, DWG, DXF, STEP or IGES drawing is recommended.

Engineering and Production Review

Each inquiry is reviewed for manufacturability, stress, solid height, tolerances, heat treatment, surface finish and inspection requirements before quotation.

Dimensional Data

Reference Configurations

Values are starting points for custom design review, not stocked-item commitments.

Model	Wire dia.	OD	ID	Free length	Rate	Material	Coils	Max load
SC-150-0201-0187-0062	1.5 mm	20.07 mm	17.07 mm	18.68 mm	0.413	Phosphor Bronze (QSn4-0.3)	10.8	0.73
SC-150-0111-0341-0035	1.5 mm	11.07 mm	8.07 mm	34.09 mm	4.608	Carbon Spring Steel Wire (SWC)	14.3	40.87
SC-200-0116-0439-0143	2 mm	11.63 mm	7.63 mm	43.9 mm	10.584	301 Stainless Steel	15.6	83.19
SC-180-0154-0300-0278	1.8 mm	15.44 mm	11.84 mm	29.97 mm	4.881	Music Wire (SWP-A)	9.9	49.84
SC-1200-0959-3192-0230	12 mm	95.93 mm	71.93 mm	319.21 mm	14.405	304 Stainless Steel	22.5	535.72
SC-050-0023-0037-0328	0.5 mm	2.34 mm	1.34 mm	3.71 mm	26.222	316 Stainless Steel	4.8	27.01
SC-200-0248-0601-0210	2 mm	24.78 mm	20.78 mm	60.07 mm	0.711	Oil-Tempered Spring Wire (SWO)	20.8	9.58
SC-050-0053-0077-0397	0.5 mm	5.32 mm	4.32 mm	7.66 mm	0.458	304 Stainless Steel	12	0.58
SC-1200-0598-3907-0149	12 mm	59.85 mm	35.85 mm	390.72 mm	93.451	Inconel X-750	21.5	8491.94
SC-800-0912-0937-0419	8 mm	91.17 mm	75.17 mm	93.72 mm	13.02	60Si2MnA Spring Steel	7.4	260.79
SC-120-0095-0296-0147	1.2 mm	9.53 mm	7.13 mm	29.63 mm	1.281	Beryllium Copper (QBe2)	17.8	8.71
SC-700-1033-2821-0016	7 mm	103.26 mm	89.26 mm	282.08 mm	0.835	316 Stainless Steel	29.8	35.81
SC-150-0132-0256-0229	1.5 mm	13.22 mm	10.22 mm	25.56 mm	2.659	304 Stainless Steel	11.7	15.37
SC-020-0028-0025-0412	0.2 mm	2.76 mm	2.36 mm	2.54 mm	0.145	65Mn Spring Steel	8.5	0.07
SC-040-0050-0102-0180	0.4 mm	4.96 mm	4.16 mm	10.25 mm	0.084	Beryllium Copper (QBe2)	20.3	0.1
SC-250-0242-0374-0189	2.5 mm	24.23 mm	19.23 mm	37.39 mm	4.492	Music Wire (SWP-B)	9.4	34.82
SC-100-0120-0359-0010	1 mm	12 mm	10 mm	35.92 mm	0.269	Music Wire (SWP-A)	29.2	1.13
SC-1000-1083-0888-0065	10 mm	108.29 mm	88.29 mm	88.77 mm	14.89	304 Stainless Steel	7.1	147.56
SC-600-0667-1954-0154	6 mm	66.72 mm	54.72 mm	195.39 mm	1.572	Beryllium Copper (QBe2)	23.6	50.53
SC-600-0821-0715-0389	6 mm	82.09 mm	70.09 mm	71.53 mm	3.543	65Mn Spring Steel	9.2	39.75
SC-300-0152-0428-0335	3 mm	15.2 mm	9.2 mm	42.85 mm	36.296	316 Stainless Steel	12.1	163.33
SC-040-0062-0049-0129	0.4 mm	6.2 mm	5.4 mm	4.86 mm	0.162	304 Stainless Steel	8	0.19
SC-150-0079-0562-0110	1.5 mm	7.86 mm	4.86 mm	56.25 mm	8.097	Inconel X-750	25	121.45
SC-350-0331-0687-0026	3.5 mm	33.12 mm	26.12 mm	68.69 mm	4.148	Music Wire (SWP-A)	14.8	59.23
SC-300-0462-1054-0100	3 mm	46.2 mm	40.2 mm	105.43 mm	0.25	Phosphor Bronze (QSn4-0.3)	21.6	5.97
SC-050-0055-0063-0193	0.5 mm	5.46 mm	4.46 mm	6.33 mm	0.686	Music Wire (SWP-B)	9.4	0.93
SC-800-0865-0639-0071	8 mm	86.47 mm	70.47 mm	63.89 mm	22.113	Music Wire (SWP-A)	5.3	312.02
SC-200-0286-0284-0359	2 mm	28.6 mm	24.6 mm	28.44 mm	1.296	Music Wire (SWP-A)	8.5	11.91
SC-500-0313-0438-0187	5 mm	31.28 mm	21.28 mm	43.84 mm	68.01	Oil-Tempered Spring Wire (SWO)	6	542.72
SC-800-0969-1581-0319	8 mm	96.94 mm	80.94 mm	158.06 mm	3.953	Music Wire (SWP-B)	15.6	75.62
SC-350-0148-0997-0172	3.5 mm	14.77 mm	7.77 mm	99.74 mm	55.906	Carbon Spring Steel Wire (SWC)	19.4	1258.46
SC-080-0112-0278-0300	0.8 mm	11.2 mm	9.6 mm	27.85 mm	0.091	Beryllium Copper (QBe2)	25.4	0.5
SC-1200-0906-3280-0150	12 mm	90.61 mm	66.61 mm	328.05 mm	23.45	304 Stainless Steel	17.7	1972.89
SC-300-0409-0980-0218	3 mm	40.92 mm	34.92 mm	97.97 mm	0.594	65Mn Spring Steel	26.2	8.79
SC-400-0368-1102-0049	4 mm	36.79 mm	28.79 mm	110.2 mm	4.284	Music Wire (SWP-A)	18.8	95.24
SC-180-0223-0683-0236	1.8 mm	22.31 mm	18.71 mm	68.3 mm	0.482	Music Wire (SWP-B)	27	5.35
SC-120-0112-0095-0142	1.2 mm	11.22 mm	8.82 mm	9.5 mm	6.385	Music Wire (SWP-B)	4.7	19.22
SC-120-0144-0217-0356	1.2 mm	14.36 mm	11.96 mm	21.73 mm	0.668	Music Wire (SWP-A)	14.5	1.86
SC-030-0039-0056-0121	0.3 mm	3.91 mm	3.31 mm	5.6 mm	0.099	316 Stainless Steel	16	0.06
SC-050-0053-0072-0410	0.5 mm	5.29 mm	4.29 mm	7.18 mm	0.654	304 Stainless Steel	8.5	1.31
SC-080-0086-0355-0224	0.8 mm	8.55 mm	6.95 mm	35.46 mm	0.269	301 Stainless Steel	29.2	1.97
SC-150-0096-0248-0354	1.5 mm	9.6 mm	6.6 mm	24.82 mm	10.57	65Mn Spring Steel	10.4	67.43
SC-350-0409-0948-0222	3.5 mm	40.9 mm	33.9 mm	94.81 mm	1.8	Music Wire (SWP-B)	17.8	37.22
SC-030-0049-0034-0053	0.3 mm	4.87 mm	4.27 mm	3.4 mm	0.069	Phosphor Bronze (QSn4-0.3)	7.3	0.07
SC-200-0241-0799-0249	2 mm	24.07 mm	20.07 mm	79.93 mm	0.345	Beryllium Copper (QBe2)	26.9	5.47
SC-500-0686-1891-0386	5 mm	68.57 mm	58.57 mm	189.1 mm	0.823	Music Wire (SWP-A)	30.3	23.93
SC-350-0519-0255-0408	3.5 mm	51.93 mm	44.93 mm	25.46 mm	3.261	Oil-Tempered Spring Wire (SWO)	5	14.38
SC-050-0046-0140-0382	0.5 mm	4.58 mm	3.58 mm	14.03 mm	0.481	60Si2MnA Spring Steel	19.9	1.14
SC-020-0040-0037-0320	0.2 mm	3.98 mm	3.58 mm	3.68 mm	0.026	Inconel X-750	13.1	0.02
SC-1000-0910-2306-0391	10 mm	90.99 mm	70.99 mm	230.6 mm	10.276	316 Stainless Steel	17.8	433.12
SC-350-0289-1436-0134	3.5 mm	28.94 mm	21.94 mm	143.64 mm	3.863	65Mn Spring Steel	25.3	155.36
SC-020-0032-0079-0396	0.2 mm	3.25 mm	2.85 mm	7.87 mm	0.013	Beryllium Copper (QBe2)	27.3	0.02
SC-1200-1387-1108-0246	12 mm	138.71 mm	114.71 mm	110.78 mm	23.26	Carbon Spring Steel Wire (SWC)	5.8	752.68
SC-040-0037-0075-0146	0.4 mm	3.73 mm	2.93 mm	7.52 mm	0.281	Beryllium Copper (QBe2)	16.3	0.23
SC-050-0076-0138-0171	0.5 mm	7.6 mm	6.6 mm	13.82 mm	0.06	Beryllium Copper (QBe2)	19.5	0.19
SC-030-0024-0135-0360	0.3 mm	2.45 mm	1.85 mm	13.46 mm	0.176	Beryllium Copper (QBe2)	28.8	0.71
SC-030-0036-0045-0244	0.3 mm	3.65 mm	3.05 mm	4.46 mm	0.229	Inconel X-750	11.3	0.18
SC-800-0976-1769-0120	8 mm	97.63 mm	81.63 mm	176.86 mm	2.053	Phosphor Bronze (QSn4-0.3)	15.2	94.36
SC-200-0228-0332-0402	2 mm	22.84 mm	18.84 mm	33.15 mm	1.694	301 Stainless Steel	10.5	13.37
SC-040-0042-0183-0115	0.4 mm	4.15 mm	3.35 mm	18.34 mm	0.182	Carbon Spring Steel Wire (SWC)	28.2	1.08
SC-020-0038-0074-0032	0.2 mm	3.81 mm	3.41 mm	7.4 mm	0.007	Beryllium Copper (QBe2)	30.9	0.01
SC-150-0171-0608-0136	1.5 mm	17.09 mm	14.09 mm	60.77 mm	0.511	Inconel X-750	27.8	6.99
SC-400-0299-1468-0027	4 mm	29.94 mm	21.94 mm	146.77 mm	6.34	Carbon Spring Steel Wire (SWC)	24.7	181.39
SC-040-0037-0121-0344	0.4 mm	3.67 mm	2.87 mm	12.11 mm	0.286	Inconel X-750	27.3	0.27
SC-060-0047-0123-0365	0.6 mm	4.74 mm	3.54 mm	12.28 mm	1.46	Music Wire (SWP-A)	13.9	4.83
SC-1000-1382-0954-0371	10 mm	138.19 mm	118.19 mm	95.43 mm	8.256	Music Wire (SWP-B)	6.7	168.08
SC-150-0078-0333-0165	1.5 mm	7.82 mm	4.82 mm	33.32 mm	15.234	Oil-Tempered Spring Wire (SWO)	14	151.12
SC-180-0109-0366-0255	1.8 mm	10.88 mm	7.28 mm	36.62 mm	5.403	Phosphor Bronze (QSn4-0.3)	14.3	48.96
SC-350-0189-0359-0085	3.5 mm	18.87 mm	11.87 mm	35.9 mm	58.524	Music Wire (SWP-A)	8.5	215.95
SC-350-0398-0658-0341	3.5 mm	39.77 mm	32.77 mm	65.8 mm	2.489	301 Stainless Steel	12.4	42.95
SC-400-0561-1671-0179	4 mm	56.14 mm	48.14 mm	167.09 mm	0.609	Oil-Tempered Spring Wire (SWO)	30.8	22.1
SC-030-0055-0130-0385	0.3 mm	5.5 mm	4.9 mm	12.99 mm	0.018	316 Stainless Steel	28.2	0.05
SC-120-0155-0153-0104	1.2 mm	15.53 mm	13.13 mm	15.34 mm	1.221	Oil-Tempered Spring Wire (SWO)	7.7	5.09
SC-060-0074-0101-0208	0.6 mm	7.43 mm	6.23 mm	10.11 mm	0.295	316 Stainless Steel	13.9	0.44
SC-040-0042-0090-0373	0.4 mm	4.22 mm	3.42 mm	9.01 mm	0.236	60Si2MnA Spring Steel	20.2	0.13
SC-120-0093-0380-0265	1.2 mm	9.33 mm	6.93 mm	37.99 mm	1.233	304 Stainless Steel	28.5	2.67
SC-250-0174-0659-0276	2.5 mm	17.41 mm	12.41 mm	65.88 mm	5.848	Inconel X-750	21.9	37.9
SC-400-0513-0536-0127	4 mm	51.26 mm	43.26 mm	53.61 mm	4.075	Music Wire (SWP-B)	7.9	50.48
SC-200-0236-0526-0103	2 mm	23.56 mm	19.56 mm	52.58 mm	0.973	65Mn Spring Steel	18.2	9.77
SC-180-0164-0322-0019	1.8 mm	16.44 mm	12.84 mm	32.15 mm	1.309	Phosphor Bronze (QSn4-0.3)	15.1	4.02
SC-020-0038-0077-0312	0.2 mm	3.84 mm	3.44 mm	7.71 mm	0.011	Carbon Spring Steel Wire (SWC)	30.9	0.01
SC-060-0081-0122-0012	0.6 mm	8.13 mm	6.93 mm	12.24 mm	0.182	301 Stainless Steel	15.4	0.46
SC-1200-1034-1032-0145	12 mm	103.37 mm	79.37 mm	103.23 mm	74.851	Music Wire (SWP-A)	5.1	2313.63
SC-500-0303-1412-0299	5 mm	30.33 mm	20.33 mm	141.17 mm	13.538	304 Stainless Steel	25.5	114.26
SC-200-0281-0279-0009	2 mm	28.09 mm	24.09 mm	27.92 mm	0.845	316 Stainless Steel	10.2	3.62
SC-150-0196-0494-0256	1.5 mm	19.57 mm	16.57 mm	49.4 mm	0.195	Phosphor Bronze (QSn4-0.3)	24.5	1.9
SC-800-0633-1966-0209	8 mm	63.26 mm	47.26 mm	196.55 mm	13.776	Inconel X-750	19.4	452.67
SC-150-0128-0563-0043	1.5 mm	12.81 mm	9.81 mm	56.26 mm	1.417	316 Stainless Steel	23.3	17.66
SC-250-0238-1083-0046	2.5 mm	23.76 mm	18.76 mm	108.26 mm	1.257	316 Stainless Steel	29.9	24.73
SC-1000-1235-1786-0086	10 mm	123.52 mm	103.52 mm	178.6 mm	3.244	Phosphor Bronze (QSn4-0.3)	11.8	149.38
SC-060-0090-0069-0226	0.6 mm	8.95 mm	7.75 mm	6.89 mm	0.234	316 Stainless Steel	9.2	0.22
SC-020-0023-0056-0183	0.2 mm	2.33 mm	1.93 mm	5.65 mm	0.068	Music Wire (SWP-A)	25.1	0.03
SC-700-0913-1872-0333	7 mm	91.27 mm	77.27 mm	187.24 mm	1.672	316 Stainless Steel	21.7	48.73
SC-700-0943-2579-0013	7 mm	94.3 mm	80.3 mm	257.9 mm	0.962	Beryllium Copper (QBe2)	24.5	64.9
SC-600-0519-1702-0191	6 mm	51.93 mm	39.93 mm	170.19 mm	6.236	316 Stainless Steel	19.5	227.18
SC-800-0549-2405-0030	8 mm	54.86 mm	38.86 mm	240.52 mm	19.827	Carbon Spring Steel Wire (SWC)	21.2	993.95
SC-180-0145-0387-0181	1.8 mm	14.47 mm	10.87 mm	38.73 mm	1.824	Phosphor Bronze (QSn4-0.3)	16.5	9.27
SC-080-0043-0094-0261	0.8 mm	4.33 mm	2.73 mm	9.38 mm	13.136	Inconel X-750	8	31.13
SC-030-0024-0054-0036	0.3 mm	2.35 mm	1.75 mm	5.38 mm	0.772	316 Stainless Steel	11.5	1.1
SC-100-0101-0152-0310	1 mm	10.09 mm	8.09 mm	15.25 mm	1.229	Inconel X-750	12.7	2.52
SC-080-0092-0190-0048	0.8 mm	9.22 mm	7.62 mm	18.96 mm	0.332	304 Stainless Steel	18.8	0.88
SC-080-0072-0101-0375	0.8 mm	7.23 mm	5.63 mm	10.1 mm	1.661	304 Stainless Steel	9	3.02
SC-040-0035-0031-0138	0.4 mm	3.49 mm	2.69 mm	3.11 mm	1.37	Beryllium Copper (QBe2)	5.8	0.73
SC-700-1026-0928-0076	7 mm	102.6 mm	88.6 mm	92.83 mm	1.718	Phosphor Bronze (QSn4-0.3)	10.2	26.76
SC-500-0503-0549-0186	5 mm	50.3 mm	40.3 mm	54.87 mm	10.709	Oil-Tempered Spring Wire (SWO)	7.7	148.85

Rate: N/mm; maximum load: N. Dimensions are in millimeters.

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Spring Requirements

Spring Type Wire Diameter (mm) Outside Diameter (mm) Inside Diameter (mm) Free Length (mm) Spring Rate Maximum Load Active / Total Coils Quantity * Material Finish Drawing PDF, CAD, image or ZIP; maximum 10 MB.

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Notes