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Century Spring

3120CS - 3.75" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 5.5 coils and closed & ground ends. This spring features an O.D. of 2.343", and an I.D. of 2.073".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3120
Ends Closed & Ground
Finish Zinc
Free Length 3.75 in
Inside Diameter 2.073 in
Material Spring Steel
Outside Diameter 2.343 in
Part Type Standard
Rate 13 lbs/in
SKU 3120CS
Solid Length 0.74 in
Suggested Max Deflection 2.6 in
Suggested Max Load 33 lbf
Total Coils 5.5
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3120
Ends Closed & Ground
Finish Zinc
Free Length 95.25 mm
Inside Diameter 52.65 mm
Material Spring Steel
Outside Diameter 59.51 mm
Part Type Standard
Rate 2.28 N/mm
SKU 3120CS
Solid Length 18.8 mm
Suggested Max Deflection 66.04 mm
Suggested Max Load 146.78 N
Total Coils 5.5
Wire Diameter 3.43 mm
The 3120 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 3120CS compression spring is designed with a free length of 2.31" total of 9 coils, and a rate of 4.1 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 3120 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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