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Century Spring

12581CS - 0.75" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 4 coils and closed ends. This spring features an O.D. of 0.75", and an I.D. of 0.65".

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

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 12581
Ends Closed
Finish None
Free Length 0.75 in
Inside Diameter 0.65 in
Material Spring Steel
Outside Diameter 0.75 in
Part Type Standard
Rate 13 lbs/in
SKU 12581CS
Solid Length 0.25 in
Suggested Max Deflection 0.46 in
Suggested Max Load 6.1 lbf
Total Coils 4
Wire Diameter 0.05 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 12581
Ends Closed
Finish None
Free Length 19.05 mm
Inside Diameter 16.51 mm
Material Spring Steel
Outside Diameter 19.05 mm
Part Type Standard
Rate 2.28 N/mm
SKU 12581CS
Solid Length 6.35 mm
Suggested Max Deflection 11.68 mm
Suggested Max Load 27.13 N
Total Coils 4
Wire Diameter 1.27 mm
The 12581 compression spring is engineered for optimal performance in demanding applications. Constructed from high-quality spring 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 12581CS compression spring is designed with a free length of 2" total of 11.3 coils, and a rate of 36 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 12581 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.

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