304 Stainless Steel Mini Compression Springs
Miniature Helical Springs | Standard Sizes | Precision Mechanical Applications
DISLAB Precision supplies 304 stainless steel mini compression springs and small compression springs for compact mechanical assemblies, precision instruments, electronic components, and industrial spring-loaded mechanisms.
Our product range includes four wire diameters, multiple spring outer diameters, and free lengths from 5 mm to 50 mm. With 283 listed size variants, buyers can select springs according to dimensional requirements and installation space.
Technical Specifications
The following specifications summarize the available 304 stainless steel miniature compression spring product range.
| Parameter | Specification |
|---|---|
| Product Type | Miniature Helical Compression Spring |
| Material | 304 Stainless Steel |
| Wire Diameter | 0.3 / 0.4 / 0.5 / 0.6 mm |
| Spring Outer Diameter | 3–12 mm, depending on wire diameter |
| Free Length | 5–50 mm, depending on size combination |
| Supplier-Listed Maximum Load | 10–2000 N (product series listing) |
| Listed Size Variants | 283 |
| Dimension Unit | Millimeters (mm) |
Available Mini Compression Spring Sizes
Four stainless steel wire diameters are available: 0.3 mm, 0.4 mm, 0.5 mm, and 0.6 mm. The table below shows the available spring outer diameters for each wire diameter series.
| Wire Diameter (mm) | Available Outer Diameters (mm) | Listed Variants |
|---|---|---|
| 0.3 | 3, 4, 5, 6 | 39 |
| 0.4 | 3, 4, 5, 6, 7, 8, 9, 10, 12 | 84 |
| 0.5 | 3, 4, 5, 6, 7, 8, 9, 10, 12 | 85 |
| 0.6 | 4, 5, 6, 7, 8, 9, 10, 12 | 75 |
| Total Listed Variants | 283 | |
Available Free-Length Options
The product series includes the following free-length options:
Understanding Spring Dimensions
Mini compression spring sizes are identified using three main dimensions:
Format example: 0.5 × 5 × 30 mm
- Wire diameter: 0.5 mm
- Spring outer diameter: 5 mm
- Free length: 30 mm
This example explains the dimension order only; confirm the exact listed size combination when requesting a quotation.
Wire Diameter (d)
Wire diameter is the thickness of the stainless steel wire used to form the spring. It influences spring stiffness and mechanical performance.
Outer Diameter (OD)
Outer diameter is measured across the outside of the spring coils. It is important when selecting a spring for a housing or mechanical assembly with limited space.
Free Length (L0)
Free length is the overall spring length when no external compression force is applied.
Product Features
304 Stainless Steel
Stainless steel construction provides general corrosion resistance for suitable indoor and industrial operating environments.
Compact Spring Design
Small wire and coil diameters support integration into miniature mechanical components and space-limited assemblies.
Wide Size Selection
The range includes 283 listed size variants across four wire diameter series, providing multiple standard dimensional options.
Axial Compression Function
Cylindrical helical springs resist axial compression and provide a restoring force when the applied load is released.
Typical Applications
Precision Machinery
Compact positioning mechanisms, small moving components, and mechanical return assemblies.
Electronic Equipment
Small electromechanical components and spring-loaded assemblies.
Industrial Instruments
Miniature mechanical systems requiring controlled axial spring action.
Custom Mechanical Assemblies
Plungers, sliding mechanisms, positioning components, and compact equipment.
Application suitability depends on operating load, compression travel, installation conditions, and expected service life.
How to Select the Right Mini Compression Spring
Selecting a suitable miniature compression spring starts with the available installation space and required mechanical function.
- Wire diameter: Select from 0.3, 0.4, 0.5, or 0.6 mm.
- Outer diameter: Choose a size compatible with the spring housing or assembly.
- Free length: Identify the required uncompressed length.
- Working load: Specify the required spring force when the application has a defined load requirement.
- Compression travel: Provide the required operating deflection or compressed spring height.
- Quantity: Indicate the required number of springs for each selected size.
Spring force and stiffness cannot be determined from wire diameter, outer diameter, and free length alone. Coil geometry and other design factors also influence spring performance.
Check Installed Height and Available Travel
For a spring-loaded assembly, specify the installed height, the shortest height reached in service, and the force required at each working position. Confirm the selected spring can travel through that range without coil bind or interference with the surrounding parts. The minimum usable height and any design allowance must be checked against the actual spring, not inferred from the listed free length.
Also show how the spring ends are seated and whether the assembly guides the spring during compression. If the mechanism cycles repeatedly, include the duty cycle and environment in the inquiry so the spring design and material can be reviewed for the application. Request a size-specific force–deflection result when working force is critical.
Ordering Information
DISLAB Precision accepts inquiries for 304 stainless steel miniature compression springs based on standard dimensions and purchasing requirements.
For a quotation, please provide:
- Wire diameter (mm)
- Spring outer diameter (mm)
- Free length (mm)
- Required quantity
- Working-load requirements, if applicable
- Technical drawing or reference sample, if available
Product: 304 Stainless Steel Mini Compression Spring
Size: 0.5 × 5 × 30 mm
Quantity: 5,000 pcs
Application: Compact mechanical assembly
Frequently Asked Questions
What material are these mini compression springs made from?
The springs in this product range are made from 304 stainless steel.
What wire diameters are available?
Available wire diameters are 0.3, 0.4, 0.5, and 0.6 mm.
What spring outer diameters are available?
Outer diameters range from 3 mm to 12 mm, depending on the wire diameter. Please refer to the standard size table.
Are all free lengths available for every diameter?
No. Free-length options range from 5 mm to 50 mm, but individual combinations vary across the product series.
What is the maximum load capacity?
The supplier lists a maximum-load range of 10–2000 N for the product series. Individual size-specific load ratings are not provided. Buyers requiring a defined load should provide the force and compressed height for evaluation.
Can I request multiple sizes in one quotation?
Yes. Please provide the required dimensions and quantities for each spring size.
Can I submit a technical drawing or sample?
Yes. Drawings or reference samples can help identify the required spring dimensions and support product matching.
Request a Quote for Mini Compression Springs
Looking for 304 stainless steel miniature compression springs for your industrial project?
DISLAB Precision supplies a wide range of standard miniature compression spring sizes for industrial purchasing requirements.
Send us your wire diameter, spring outer diameter, free length, and required quantity. Include working-load information or a technical drawing if available.
Use the existing DISLAB Precision quote form below and include your spring dimensions, quantity, application, and destination country.
Get a Fast Quote
Add the product name and complete spring size to your message so our team can identify the requested mini compression spring sizes.
Need to send drawings or specifications?
Email your PDF, STEP, DWG, DXF or other reference files directly to [email protected], or send them via WhatsApp.