0.4 mm Wire Compression Springs Reference Data: 30 catalog-backed reference configurations are available for sizing review. Use the ranges below to compare the starting envelope before submitting a drawing for final quotation.
- Wire diameter
- 0.4-0.4 mm (0.0157-0.0157 in)
- Outside diameter
- 2.26-7.24 mm (0.089-0.285 in)
- Inside diameter
- 1.46-6.44 mm (0.0575-0.2535 in)
- Free length
- 3.11-19.67 mm (0.1224-0.7744 in)
- Spring rate
- 0.023-3.651 N/mm
- Maximum load
- 0.02-7.01 N
Catalog rows are reference configurations for custom design review. Final dimensions, loads, tolerances and material certifications are confirmed during quotation.
Products Represented in This Data
These rows show which product designs are represented in the reference data. Open the matching product for geometry, quotation inputs, application guidance and RFQ details.
- Conical Compression Springs6 matching rowsConical Compression Springs Application Guide
- Cylindrical Compression Springs4 matching rowsCylindrical Compression Springs Application Guide
- Tower-Shaped Compression Springs13 matching rowsTower-Shaped Compression Springs Application Guide
- Variable-Diameter Compression Springs7 matching rowsVariable-Diameter Compression Springs Application Guide
Related Spring Design Guides
Use these guides to define the working dimensions, loads and quotation requirements.
Sizing Overview
0.4 mm Wire compression springs pages are useful when the available wire diameter is fixed and the outside diameter, free length or load target needs to be adjusted. The rows below combine multiple compression springs product forms so you can compare nearby options before an RFQ review.
- Wire diameter
- 0.4-0.4 mm (0.0157-0.0157 in)
- Outside diameter
- 2.26-7.24 mm (0.089-0.285 in)
- Inside diameter
- 1.46-6.44 mm (0.0575-0.2535 in)
- Free length
- 3.11-19.67 mm (0.1224-0.7744 in)
- Spring rate (N/mm)
- 0.023-3.651 N/mm
- Maximum load (N)
- 0.02-7.01 N
Matching Reference Configurations
| Model | Product | Wire / thickness | OD | ID | Free length | Rate (N/mm) | Material | Max load (N) |
|---|---|---|---|---|---|---|---|---|
| SC-040-0023-0076-0006 | Tower-Shaped Compression Springs | 0.4 mm | 2.26 mm | 1.46 mm | 7.61 mm | 3.651 | Music Wire (SWP-B) | 7.01 |
| SC-040-0031-0062-0352 | Cylindrical Compression Springs | 0.4 mm | 3.11 mm | 2.31 mm | 6.21 mm | 1.518 | Music Wire (SWP-B) | 2.46 |
| SC-040-0035-0031-0138 | Variable-Diameter Compression Springs | 0.4 mm | 3.49 mm | 2.69 mm | 3.11 mm | 1.37 | Beryllium Copper (QBe2) | 0.73 |
| SC-040-0036-0061-0392 | Conical Compression Springs | 0.4 mm | 3.63 mm | 2.83 mm | 6.12 mm | 1.018 | Music Wire (SWP-B) | 1.79 |
| SC-040-0037-0121-0344 | Variable-Diameter Compression Springs | 0.4 mm | 3.67 mm | 2.87 mm | 12.11 mm | 0.286 | Inconel X-750 | 0.27 |
| SC-040-0037-0075-0146 | Variable-Diameter Compression Springs | 0.4 mm | 3.73 mm | 2.93 mm | 7.52 mm | 0.281 | Beryllium Copper (QBe2) | 0.23 |
| SC-040-0039-0163-0374 | Tower-Shaped Compression Springs | 0.4 mm | 3.91 mm | 3.11 mm | 16.26 mm | 0.125 | Phosphor Bronze (QSn4-0.3) | 0.47 |
| SC-040-0040-0096-0194 | Conical Compression Springs | 0.4 mm | 3.97 mm | 3.17 mm | 9.6 mm | 0.308 | Carbon Spring Steel Wire (SWC) | 0.45 |
| SC-040-0040-0126-0267 | Conical Compression Springs | 0.4 mm | 4.04 mm | 3.24 mm | 12.62 mm | 0.285 | Carbon Spring Steel Wire (SWC) | 0.87 |
| SC-040-0041-0073-0381 | Tower-Shaped Compression Springs | 0.4 mm | 4.1 mm | 3.3 mm | 7.33 mm | 0.257 | Beryllium Copper (QBe2) | 0.42 |
| SC-040-0041-0142-0237 | Conical Compression Springs | 0.4 mm | 4.1 mm | 3.3 mm | 14.21 mm | 0.184 | 65Mn Spring Steel | 0.31 |
| SC-040-0042-0183-0115 | Variable-Diameter Compression Springs | 0.4 mm | 4.15 mm | 3.35 mm | 18.34 mm | 0.182 | Carbon Spring Steel Wire (SWC) | 1.08 |
| SC-040-0042-0090-0373 | Variable-Diameter Compression Springs | 0.4 mm | 4.22 mm | 3.42 mm | 9.01 mm | 0.236 | 60Si2MnA Spring Steel | 0.13 |
| SC-040-0048-0103-0144 | Tower-Shaped Compression Springs | 0.4 mm | 4.83 mm | 4.03 mm | 10.34 mm | 0.196 | 60Si2MnA Spring Steel | 0.54 |
| SC-040-0050-0102-0180 | Variable-Diameter Compression Springs | 0.4 mm | 4.96 mm | 4.16 mm | 10.25 mm | 0.084 | Beryllium Copper (QBe2) | 0.1 |
| SC-040-0050-0069-0313 | Conical Compression Springs | 0.4 mm | 4.98 mm | 4.18 mm | 6.87 mm | 0.203 | Music Wire (SWP-A) | 0.13 |
| SC-040-0050-0070-0316 | Conical Compression Springs | 0.4 mm | 5.02 mm | 4.22 mm | 6.95 mm | 0.224 | Music Wire (SWP-A) | 0.31 |
| SC-040-0051-0112-0116 | Tower-Shaped Compression Springs | 0.4 mm | 5.11 mm | 4.31 mm | 11.19 mm | 0.121 | 316 Stainless Steel | 0.33 |
| SC-040-0055-0129-0166 | Tower-Shaped Compression Springs | 0.4 mm | 5.5 mm | 4.7 mm | 12.9 mm | 0.061 | 301 Stainless Steel | 0.08 |
| SC-040-0056-0083-0102 | Tower-Shaped Compression Springs | 0.4 mm | 5.6 mm | 4.8 mm | 8.34 mm | 0.13 | 301 Stainless Steel | 0.28 |
| SC-040-0057-0137-0309 | Tower-Shaped Compression Springs | 0.4 mm | 5.73 mm | 4.93 mm | 13.73 mm | 0.08 | 60Si2MnA Spring Steel | 0.25 |
| SC-040-0058-0040-0268 | Tower-Shaped Compression Springs | 0.4 mm | 5.75 mm | 4.95 mm | 3.97 mm | 0.377 | Music Wire (SWP-B) | 0.4 |
| SC-040-0059-0091-0239 | Tower-Shaped Compression Springs | 0.4 mm | 5.93 mm | 5.13 mm | 9.14 mm | 0.074 | 316 Stainless Steel | 0.08 |
| SC-040-0062-0049-0129 | Variable-Diameter Compression Springs | 0.4 mm | 6.2 mm | 5.4 mm | 4.86 mm | 0.162 | 304 Stainless Steel | 0.19 |
| SC-040-0062-0049-0033 | Cylindrical Compression Springs | 0.4 mm | 6.21 mm | 5.41 mm | 4.93 mm | 0.177 | Oil-Tempered Spring Wire (SWO) | 0.18 |
| SC-040-0064-0032-0235 | Tower-Shaped Compression Springs | 0.4 mm | 6.45 mm | 5.65 mm | 3.21 mm | 0.154 | Beryllium Copper (QBe2) | 0.11 |
| SC-040-0067-0104-0050 | Tower-Shaped Compression Springs | 0.4 mm | 6.7 mm | 5.9 mm | 10.43 mm | 0.048 | Music Wire (SWP-B) | 0.04 |
| SC-040-0068-0197-0380 | Cylindrical Compression Springs | 0.4 mm | 6.82 mm | 6.02 mm | 19.67 mm | 0.032 | Music Wire (SWP-A) | 0.14 |
| SC-040-0069-0115-0173 | Cylindrical Compression Springs | 0.4 mm | 6.88 mm | 6.08 mm | 11.51 mm | 0.023 | Beryllium Copper (QBe2) | 0.02 |
| SC-040-0072-0060-0349 | Tower-Shaped Compression Springs | 0.4 mm | 7.24 mm | 6.44 mm | 6 mm | 0.034 | Phosphor Bronze (QSn4-0.3) | 0.02 |
Quotation Notes
For a final quote, send the target load or spring rate, working travel, material preference, operating temperature, environment, quantity and drawing. CustomSprings can adjust coil count, end type, free length, outside diameter and surface finish from these reference rows.
CustomSprings Engineering Catalog
Request This Spring
Send your dimensions, quantity and drawing for engineering review.
Frequently Asked Questions
Can the outside diameter change if the wire diameter stays fixed?
Yes. Outside diameter, coil count, free length and end type can be changed around the selected wire diameter if the stress, solid height and load target remain feasible.
Are the dimensions shown in millimeters or inches?
The catalog data is stored in millimeters. The summary also gives inch conversions for quick review by US customers.
What information is needed for a quote?
Send the wire diameter, OD or ID, free length, rate or load, working travel, material, environment, quantity and drawing.