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S-20CS - 0.5" 302/304 Stainless Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from 302/304 stainless steel with 3 coils and closed ends. This spring features an O.D. of 0.718", and an I.D. of 0.593".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name S-20
Ends Closed
Finish None
Free Length 0.5 in
Inside Diameter 0.593 in
Material 302/304 Stainless Steel
Outside Diameter 0.718 in
Part Type Standard
Rate 70 lbs/in
SKU S-20CS
Solid Length 0.25 in
Suggested Max Deflection 0.17 in
Suggested Max Load 12 lbf
Total Coils 3
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name S-20
Ends Closed
Finish None
Free Length 12.7 mm
Inside Diameter 15.06 mm
Material 302/304 Stainless Steel
Outside Diameter 18.24 mm
Part Type Standard
Rate 12.26 N/mm
SKU S-20CS
Solid Length 6.35 mm
Suggested Max Deflection 4.32 mm
Suggested Max Load 53.38 N
Total Coils 3
Wire Diameter 1.59 mm
The S-20 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality 302/304 stainless steel and designed with precision and durability in mind, this spring is an essential component for a variety of mechanical systems where reliable force and resilience are paramount.

The S-20CS compression spring is designed with a free length of 0.31" total of 3.5 coils, and a rate of 25 lbs/in providing a balanced combination of flexibility and strength. This spring coil, and its closed & ground end configuration allows for efficient energy storage and release, making it suitable for applications requiring precise motion control.

The S-20 spring design is ideal for use in industrial machinery, automotive systems, and various mechanical assemblies where reliable force application is crucial. Its robust construction and thoughtful design make it a dependable choice for engineers seeking a high-performance spring solution.