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Compression Springs

Custom Tower-Shaped Compression Springs

A stepped or strongly tapered compression spring built for compact collapse, nested coils, and assemblies where the available diameter changes along the spring height.

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Tower-Shaped Compression Springs manufactured by CustomSprings
Typical configurations
119
Wire diameter
0.2–12 mm
Outside diameter
1.5–178.43 mm
Free length
1.95–442.17 mm

About Custom Tower-Shaped Compression Springs

Tower-shaped compression springs are a more pronounced nested form of variable-diameter compression spring. They are often selected when the spring must occupy very little height when compressed or when the surrounding pocket itself changes diameter in stages. The design depends heavily on coil spacing and the order in which turns approach one another.

Key Design Characteristics

  • Each turn may use a different diameter, so the compressed stack must be checked turn by turn.
  • The spring can be designed to collapse into a short package when enough radial clearance exists between adjacent coils.
  • Progressive coil contact can change the effective rate through the stroke.
  • End diameters and the installation direction are part of the functional design, not cosmetic details.

What to Specify for a Custom Quote

  • Wire diameter and diameter of the top and bottom seating areas
  • Free height, installed height and required collapsed height
  • Load or rate over the actual working stroke
  • Any pocket profile or central guide that limits the coil envelope
  • Required orientation, end treatment, life target and quantity

Manufacturing Review

Tower springs benefit from a drawing that shows both free and compressed envelopes. Production review focuses on diameter sequence, pitch, axial alignment and whether the turns can pass each other without rubbing or locking.

Common Assembly Roles

  • Very compact return mechanisms
  • Nested spring packages beneath caps or plungers
  • Assemblies with stepped or tapered internal space

Product Data

Typical Spring Configurations

Use these data points to compare practical starting dimensions and material options. Final production specifications are confirmed against your drawing and working conditions.

ModelWire dia.ODIDFree lengthRateMaterialCoilsMax load
SC-100-0087-0275-0390 1 mm 8.66 mm 6.66 mm 27.51 mm 1.324 60Si2MnA Spring Steel 18.6 7.35
SC-180-0175-0176-0272 1.8 mm 17.53 mm 13.93 mm 17.56 mm 4.61 Music Wire (SWP-A) 6.8 17.56
SC-050-0075-0083-0284 0.5 mm 7.54 mm 6.54 mm 8.34 mm 0.14 Inconel X-750 14.6 0.12
SC-700-0921-2441-0301 7 mm 92.13 mm 78.13 mm 244.08 mm 1.525 Oil-Tempered Spring Wire (SWO) 26.2 56.96
SC-200-0222-0269-0290 2 mm 22.23 mm 18.23 mm 26.87 mm 2.039 Carbon Spring Steel Wire (SWC) 10.8 7.97
SC-400-0334-1096-0286 4 mm 33.39 mm 25.39 mm 109.6 mm 2.841 Beryllium Copper (QBe2) 23.3 39.57
SC-030-0061-0069-0324 0.3 mm 6.14 mm 5.54 mm 6.88 mm 0.029 Carbon Spring Steel Wire (SWC) 15.2 0.05
SC-400-0543-1463-0303 4 mm 54.31 mm 46.31 mm 146.27 mm 0.797 Oil-Tempered Spring Wire (SWO) 25.9 22.29
SC-300-0320-0629-0361 3 mm 32.01 mm 26.01 mm 62.88 mm 2.8 Oil-Tempered Spring Wire (SWO) 12.7 54.66
SC-180-0133-0337-0372 1.8 mm 13.28 mm 9.68 mm 33.66 mm 2.615 Phosphor Bronze (QSn4-0.3) 15.6 9.6
SC-050-0028-0062-0273 0.5 mm 2.85 mm 1.85 mm 6.22 mm 7.552 316 Stainless Steel 7.5 10.35
SC-800-0608-0766-0126 8 mm 60.84 mm 44.84 mm 76.58 mm 54.422 301 Stainless Steel 6.4 1068.86
SC-400-0444-1188-0054 4 mm 44.4 mm 36.4 mm 118.84 mm 1.199 Phosphor Bronze (QSn4-0.3) 18.6 41.18
SC-500-0266-0911-0109 5 mm 26.63 mm 16.63 mm 91.08 mm 48.022 Oil-Tempered Spring Wire (SWO) 14.2 813.5
SC-060-0085-0096-0061 0.6 mm 8.48 mm 7.28 mm 9.57 mm 0.263 Music Wire (SWP-B) 11.5 0.46
SC-020-0023-0052-0260 0.2 mm 2.28 mm 1.88 mm 5.24 mm 0.1 65Mn Spring Steel 19 0.11
SC-200-0136-0367-0200 2 mm 13.56 mm 9.56 mm 36.71 mm 6.773 60Si2MnA Spring Steel 16.1 25.47
SC-400-0444-1838-0128 4 mm 44.37 mm 36.37 mm 183.83 mm 1.119 301 Stainless Steel 31.5 45.09
SC-1000-1336-1974-0051 10 mm 133.62 mm 113.62 mm 197.42 mm 3.681 Inconel X-750 16.2 98.95
SC-120-0128-0448-0099 1.2 mm 12.81 mm 10.41 mm 44.82 mm 0.478 316 Stainless Steel 24.9 5.44
SC-050-0064-0172-0067 0.5 mm 6.44 mm 5.44 mm 17.15 mm 0.137 Inconel X-750 22.5 0.53
SC-080-0080-0345-0329 0.8 mm 7.97 mm 6.37 mm 34.52 mm 0.413 60Si2MnA Spring Steel 28.6 2.68
SC-600-0344-2134-0240 6 mm 34.36 mm 22.36 mm 213.44 mm 19.218 304 Stainless Steel 26.5 801.19
SC-400-0402-0672-0253 4 mm 40.2 mm 32.2 mm 67.22 mm 2.738 Phosphor Bronze (QSn4-0.3) 12.1 40.75
SC-500-0717-1640-0252 5 mm 71.69 mm 61.69 mm 164.05 mm 0.949 Music Wire (SWP-B) 23.5 34.59
SC-060-0084-0153-0169 0.6 mm 8.35 mm 7.15 mm 15.31 mm 0.14 65Mn Spring Steel 20.6 0.33
SC-040-0051-0112-0116 0.4 mm 5.11 mm 4.31 mm 11.19 mm 0.121 316 Stainless Steel 19 0.33
SC-300-0214-0174-0052 3 mm 21.36 mm 15.36 mm 17.4 mm 36.414 301 Stainless Steel 4.1 147.11
SC-500-0363-2164-0297 5 mm 36.26 mm 26.26 mm 216.35 mm 7.862 65Mn Spring Steel 27.7 511.4
SC-600-0452-1095-0047 6 mm 45.23 mm 33.23 mm 109.49 mm 9.266 Beryllium Copper (QBe2) 15.4 107.11
SC-200-0289-0492-0254 2 mm 28.86 mm 24.86 mm 49.22 mm 0.576 Music Wire (SWP-B) 16.2 5.38
SC-300-0235-0426-0363 3 mm 23.5 mm 17.5 mm 42.61 mm 14.507 65Mn Spring Steel 8.4 210.79
SC-040-0057-0137-0309 0.4 mm 5.73 mm 4.93 mm 13.73 mm 0.08 60Si2MnA Spring Steel 22.4 0.25
SC-200-0110-0360-0004 2 mm 11.01 mm 7.01 mm 35.95 mm 17.009 Inconel X-750 14.2 72.29
SC-040-0056-0083-0102 0.4 mm 5.6 mm 4.8 mm 8.34 mm 0.13 301 Stainless Steel 14.1 0.28
SC-300-0354-1229-0250 3 mm 35.44 mm 29.44 mm 122.92 mm 0.881 Inconel X-750 27.6 25.36
SC-120-0193-0408-0201 1.2 mm 19.31 mm 16.91 mm 40.78 mm 0.138 Oil-Tempered Spring Wire (SWO) 27 0.9
SC-100-0070-0199-0024 1 mm 6.99 mm 4.99 mm 19.87 mm 1.656 Phosphor Bronze (QSn4-0.3) 15.9 5.43
SC-300-0385-0924-0353 3 mm 38.52 mm 32.52 mm 92.4 mm 0.881 316 Stainless Steel 19.2 21.47
SC-150-0183-0620-0282 1.5 mm 18.3 mm 15.3 mm 62.02 mm 0.225 Phosphor Bronze (QSn4-0.3) 25.3 3.76
SC-500-0398-1460-0090 5 mm 39.8 mm 29.8 mm 146.04 mm 6.062 316 Stainless Steel 22.1 150.52
SC-060-0070-0243-0214 0.6 mm 6.95 mm 5.75 mm 24.28 mm 0.102 Beryllium Copper (QBe2) 31.4 0.46
SC-600-0827-1136-0322 6 mm 82.68 mm 70.68 mm 113.59 mm 2.244 Music Wire (SWP-A) 14.2 51.06
SC-120-0099-0109-0041 1.2 mm 9.9 mm 7.5 mm 10.91 mm 2.735 Phosphor Bronze (QSn4-0.3) 6.9 5.72
SC-200-0301-0634-0305 2 mm 30.12 mm 26.12 mm 63.44 mm 0.382 Carbon Spring Steel Wire (SWC) 20.5 5.06
SC-030-0026-0128-0311 0.3 mm 2.6 mm 2 mm 12.75 mm 0.257 60Si2MnA Spring Steel 26.6 0.73
SC-700-0551-2605-0215 7 mm 55.07 mm 41.07 mm 260.54 mm 8.912 Carbon Spring Steel Wire (SWC) 25.8 539.97
SC-150-0200-0114-0292 1.5 mm 20.03 mm 17.03 mm 11.36 mm 1.016 Beryllium Copper (QBe2) 5.7 1.85
SC-180-0272-0275-0119 1.8 mm 27.15 mm 23.55 mm 27.51 mm 0.687 Music Wire (SWP-A) 11.3 3.26
SC-120-0125-0407-0163 1.2 mm 12.47 mm 10.07 mm 40.73 mm 0.579 Music Wire (SWP-B) 26.3 4.43
SC-200-0100-0516-0021 2 mm 10.03 mm 6.03 mm 51.64 mm 8.787 Beryllium Copper (QBe2) 22.1 54.3
SC-150-0230-0717-0114 1.5 mm 22.97 mm 19.97 mm 71.67 mm 0.174 Oil-Tempered Spring Wire (SWO) 30.6 3.54
SC-250-0129-1004-0259 2.5 mm 12.94 mm 7.94 mm 100.39 mm 11.945 Carbon Spring Steel Wire (SWC) 29.7 172.37
SC-020-0015-0020-0315 0.2 mm 1.5 mm 1.1 mm 1.95 mm 1.142 Oil-Tempered Spring Wire (SWO) 7.8 0.25
SC-060-0045-0160-0298 0.6 mm 4.46 mm 3.26 mm 16.05 mm 0.635 Phosphor Bronze (QSn4-0.3) 20.2 1.74
SC-1000-1068-4036-0081 10 mm 106.81 mm 86.81 mm 403.62 mm 2.363 Phosphor Bronze (QSn4-0.3) 25.4 226.03
SC-200-0197-0750-0217 2 mm 19.68 mm 15.68 mm 74.99 mm 0.885 304 Stainless Steel 30.2 9.32
SC-800-0974-0823-0175 8 mm 97.36 mm 81.36 mm 82.27 mm 11.788 316 Stainless Steel 6.2 231.99
SC-040-0055-0129-0166 0.4 mm 5.5 mm 4.7 mm 12.9 mm 0.061 301 Stainless Steel 28.4 0.08
SC-400-0584-1068-0060 4 mm 58.42 mm 50.42 mm 106.85 mm 0.901 Inconel X-750 18.9 15.72
SC-800-0875-0870-0080 8 mm 87.5 mm 71.5 mm 86.98 mm 10.044 304 Stainless Steel 9 93.91
SC-1200-1784-3018-0238 12 mm 178.43 mm 154.43 mm 301.76 mm 1.612 Phosphor Bronze (QSn4-0.3) 15.8 148.63
SC-050-0081-0226-0379 0.5 mm 8.12 mm 7.12 mm 22.61 mm 0.049 Music Wire (SWP-B) 29.6 0.22
SC-350-0406-0212-0314 3.5 mm 40.64 mm 33.64 mm 21.19 mm 9.642 60Si2MnA Spring Steel 4.5 32.4
SC-020-0026-0029-0137 0.2 mm 2.6 mm 2.2 mm 2.9 mm 0.088 316 Stainless Steel 12.8 0.02
SC-080-0103-0068-0044 0.8 mm 10.28 mm 8.68 mm 6.75 mm 1.037 301 Stainless Steel 6 1.59
SC-200-0296-0668-0097 2 mm 29.57 mm 25.57 mm 66.83 mm 0.299 Oil-Tempered Spring Wire (SWO) 26.7 2.92
SC-080-0040-0127-0227 0.8 mm 4 mm 2.4 mm 12.72 mm 11.264 Music Wire (SWP-B) 13 21.06
SC-180-0158-0580-0178 1.8 mm 15.83 mm 12.23 mm 57.96 mm 1.242 304 Stainless Steel 27.9 6.35
SC-200-0092-0800-0269 2 mm 9.2 mm 5.2 mm 79.97 mm 14.259 Music Wire (SWP-B) 31.3 206.19
SC-040-0058-0040-0268 0.4 mm 5.75 mm 4.95 mm 3.97 mm 0.377 Music Wire (SWP-B) 5.9 0.4
SC-150-0192-0176-0387 1.5 mm 19.24 mm 16.24 mm 17.57 mm 1.665 Music Wire (SWP-B) 6.9 8.07
SC-1000-0970-0741-0207 10 mm 97 mm 77 mm 74.13 mm 35.705 Oil-Tempered Spring Wire (SWO) 5.2 547
SC-180-0130-0332-0074 1.8 mm 12.97 mm 9.37 mm 33.17 mm 5.749 316 Stainless Steel 13.3 37.66
SC-040-0059-0091-0239 0.4 mm 5.93 mm 5.13 mm 9.14 mm 0.074 316 Stainless Steel 19.6 0.08
SC-1200-1541-4422-0158 12 mm 154.13 mm 130.13 mm 442.17 mm 3.359 Carbon Spring Steel Wire (SWC) 23.1 320.28
SC-800-1002-2812-0407 8 mm 100.25 mm 84.25 mm 281.16 mm 2.191 Music Wire (SWP-A) 24.6 136.81
SC-040-0041-0073-0381 0.4 mm 4.1 mm 3.3 mm 7.33 mm 0.257 Beryllium Copper (QBe2) 13.3 0.42
SC-350-0502-0741-0411 3.5 mm 50.18 mm 43.18 mm 74.14 mm 1.035 316 Stainless Steel 13.8 16.02
SC-250-0132-0158-0068 2.5 mm 13.19 mm 8.19 mm 15.8 mm 49.66 Phosphor Bronze (QSn4-0.3) 4.8 158.42
SC-030-0044-0039-0078 0.3 mm 4.42 mm 3.82 mm 3.93 mm 0.179 60Si2MnA Spring Steel 7.9 0.2
SC-800-0360-3433-0364 8 mm 36.05 mm 20.05 mm 343.3 mm 65.939 Music Wire (SWP-B) 29.9 3989.95
SC-400-0366-0579-0070 4 mm 36.63 mm 28.63 mm 57.92 mm 7.134 60Si2MnA Spring Steel 11.2 64.13
SC-1200-1529-3509-0211 12 mm 152.9 mm 128.9 mm 350.89 mm 3.936 65Mn Spring Steel 20.6 245.31
SC-040-0048-0103-0144 0.4 mm 4.83 mm 4.03 mm 10.34 mm 0.196 60Si2MnA Spring Steel 16.3 0.54
SC-250-0198-0813-0157 2.5 mm 19.84 mm 14.84 mm 81.34 mm 3.54 Inconel X-750 21.9 54.16
SC-350-0331-1264-0339 3.5 mm 33.06 mm 26.06 mm 126.44 mm 1.676 304 Stainless Steel 31.9 20.48
SC-800-0692-1008-0002 8 mm 69.19 mm 53.19 mm 100.84 mm 19.837 Inconel X-750 10.9 165.04
SC-400-0281-0517-0342 4 mm 28.12 mm 20.12 mm 51.69 mm 21.195 60Si2MnA Spring Steel 10.5 123.14
SC-700-0715-3341-0266 7 mm 71.46 mm 57.46 mm 334.14 mm 3.15 65Mn Spring Steel 29.6 290.36
SC-300-0195-0899-0096 3 mm 19.49 mm 13.49 mm 89.9 mm 7.722 60Si2MnA Spring Steel 24.1 106.95
SC-400-0186-1194-0162 4 mm 18.65 mm 10.65 mm 119.37 mm 35.894 Inconel X-750 23.9 660.8
SC-050-0074-0114-0231 0.5 mm 7.39 mm 6.39 mm 11.45 mm 0.147 Music Wire (SWP-B) 13.9 0.46
SC-800-0796-3224-0234 8 mm 79.56 mm 63.56 mm 322.45 mm 4.229 60Si2MnA Spring Steel 27.6 328.9
SC-040-0067-0104-0050 0.4 mm 6.7 mm 5.9 mm 10.43 mm 0.048 Music Wire (SWP-B) 22.2 0.04
SC-040-0023-0076-0006 0.4 mm 2.26 mm 1.46 mm 7.61 mm 3.651 Music Wire (SWP-B) 11.8 7.01
SC-040-0064-0032-0235 0.4 mm 6.45 mm 5.65 mm 3.21 mm 0.154 Beryllium Copper (QBe2) 5.5 0.11
SC-400-0450-1320-0107 4 mm 44.99 mm 36.99 mm 132.05 mm 1.527 304 Stainless Steel 22.5 38.35
SC-040-0039-0163-0374 0.4 mm 3.91 mm 3.11 mm 16.26 mm 0.125 Phosphor Bronze (QSn4-0.3) 25.7 0.47
SC-200-0234-0209-0132 2 mm 23.38 mm 19.38 mm 20.92 mm 2.277 60Si2MnA Spring Steel 8.6 4.87
SC-080-0134-0332-0040 0.8 mm 13.41 mm 11.81 mm 33.16 mm 0.076 Music Wire (SWP-A) 27.8 0.54
SC-100-0151-0191-0216 1 mm 15.09 mm 13.09 mm 19.12 mm 0.278 304 Stainless Steel 12.6 1.37
SC-1000-1285-3406-0394 10 mm 128.54 mm 108.54 mm 340.62 mm 3.056 Oil-Tempered Spring Wire (SWO) 20.9 298.78
SC-250-0378-1033-0108 2.5 mm 37.76 mm 32.76 mm 103.34 mm 0.265 304 Stainless Steel 31 4.39
SC-120-0168-0152-0022 1.2 mm 16.77 mm 14.37 mm 15.25 mm 0.666 Carbon Spring Steel Wire (SWC) 9.1 1.95
SC-800-0596-2019-0403 8 mm 59.58 mm 43.58 mm 201.87 mm 18.774 Inconel X-750 17.7 833
SC-350-0318-0648-0131 3.5 mm 31.84 mm 24.84 mm 64.82 mm 4.661 301 Stainless Steel 13.7 45.49
SC-800-0359-3409-0357 8 mm 35.88 mm 19.88 mm 340.87 mm 65.509 Music Wire (SWP-A) 30.6 3816.54
SC-030-0024-0032-0225 0.3 mm 2.37 mm 1.77 mm 3.19 mm 1.335 304 Stainless Steel 7.4 0.96
SC-300-0291-0774-0350 3 mm 29.14 mm 23.14 mm 77.38 mm 3.1 Music Wire (SWP-B) 16 57.6
SC-030-0046-0118-0258 0.3 mm 4.55 mm 3.95 mm 11.83 mm 0.041 60Si2MnA Spring Steel 26.7 0.09
SC-400-0525-1040-0190 4 mm 52.46 mm 44.46 mm 104.04 mm 1.139 60Si2MnA Spring Steel 20.5 21.34
SC-060-0067-0192-0326 0.6 mm 6.72 mm 5.52 mm 19.21 mm 0.276 Carbon Spring Steel Wire (SWC) 22.1 1.06
SC-060-0067-0280-0069 0.6 mm 6.74 mm 5.54 mm 28.05 mm 0.19 Inconel X-750 30.6 1.31
SC-020-0017-0056-0168 0.2 mm 1.7 mm 1.3 mm 5.56 mm 0.211 Music Wire (SWP-A) 23.8 0.11
SC-300-0273-0444-0367 3 mm 27.3 mm 21.3 mm 44.45 mm 3.857 Phosphor Bronze (QSn4-0.3) 9 44.13
SC-040-0072-0060-0349 0.4 mm 7.24 mm 6.44 mm 6 mm 0.034 Phosphor Bronze (QSn4-0.3) 13 0.02
SC-060-0083-0148-0212 0.6 mm 8.31 mm 7.11 mm 14.81 mm 0.151 60Si2MnA Spring Steel 20.5 0.26
SC-500-0700-1341-0197 5 mm 69.99 mm 59.99 mm 134.12 mm 0.575 Phosphor Bronze (QSn4-0.3) 21.8 11.44

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

Next Design Decisions

Next Steps for Your Spring Design

Once the spring style is selected, confirm how it works in the assembly, which material suits the environment, how it will be manufactured and which dimensions and performance points should be controlled on the drawing.

Applications

Where this spring style fits

Review best-fit uses, assembly constraints and situations where another spring style may be a better choice.

View application guidance →

Materials

Choose the material for the environment

High-strength carbon or alloy spring wire is often efficient where corrosion is controlled; stainless options are useful when the spring is exposed. Very tight nesting may limit practical wire and coating combinations.

Compare spring materials →

Manufacturing

Plan prototype and production

Review forming, heat treatment, secondary operations, inspection and the path from first samples to repeat production.

View manufacturing capabilities →

Engineering Data

Open matching engineering guides

Matching material and wire-diameter pages provide additional design data for material and size selection.

Open Spring Engineering Guide →

Material Direction

Common Material Families to Review

The links below are selection guides, not a claim that every grade is suitable for every size or load.

Carbon & Alloy Spring SteelsSelection guide Stainless Steel Spring MaterialsSelection guide Copper Alloy Spring MaterialsSelection guide Nickel & High-Temperature Spring AlloysSelection guide

Related Spring Design Guides

Review the design and measurement requirements for this spring family.

Engineering Support

Spring Engineering Guides

Use these guides to compare material, wire diameter and standard requirements before finalizing the product drawing.

Material data 60Si2MnA Spring Steel Compression Springs Engineering Data 16 matching tower-shaped compression springs data rows are included in the category. Material data Phosphor Bronze (QSn4-0.3) Compression Springs Engineering Data 14 matching tower-shaped compression springs data rows are included in the category. Material data Music Wire (SWP-B) Compression Springs Engineering Data 14 matching tower-shaped compression springs data rows are included in the category. Wire diameter 0.2 mm Compression Springs Engineering Data 4 matching tower-shaped compression springs data rows are included in the category. Wire diameter 1.2 mm Compression Springs Engineering Data 5 matching tower-shaped compression springs data rows are included in the category. Wire diameter 3.5 mm Compression Springs Engineering Data 4 matching tower-shaped compression springs data rows are included in the category.

Compare Designs

Use these alternatives when the available space, connection style, travel or force direction changes.

Conical Compression Springs manufactured by CustomSprings

Compression Springs

Conical Compression Springs

A tapered compression spring for assemblies that need a changing diameter, improved stability, or a lower compressed package than a conventional straight coil can provide.

Variable-Diameter Compression Springs manufactured by CustomSprings

Compression Springs

Variable-Diameter Compression Springs

A compression spring with a deliberately changing coil diameter used to fit non-uniform spaces, tune stability, or shape how the spring responds through its travel.

Cylindrical Compression Springs manufactured by CustomSprings

Compression Springs

Cylindrical Compression Springs

A straight, constant-diameter coil for predictable axial force where the spring works inside a bore, around a guide, or between two flat seats.

Product Questions

Tower-Shaped Compression Springs FAQ

How is a tower spring different from a conical spring?

A tower spring usually uses a stronger step or staged diameter progression and is commonly designed for pronounced nesting. A conical spring can be much more gradual and may not be intended to telescope.

What normally limits the minimum compressed height?

Wire diameter, coil-to-coil radial clearance, end geometry and the number of turns determine how closely the spring can collapse.

RFQ

Send the Working Requirement

A drawing is ideal. If you do not have one yet, provide the dimensions, load or torque, travel, environment and expected quantity that matter in the assembly.

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