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Century Spring

1561CS - 3.75" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 14 coils and closed & ground ends. This spring features an O.D. of 0.859", and an I.D. of 0.629".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 1561
Ends Closed & Ground
Finish Zinc
Free Length 3.75 in
Inside Diameter 0.629 in
Material Spring Steel
Outside Diameter 0.859 in
Part Type Standard
Rate 51 lbs/in
SKU 1561CS
Solid Length 1.61 in
Suggested Max Deflection 1.1 in
Suggested Max Load 55 lbf
Total Coils 14
Wire Diameter 0.115 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 1561
Ends Closed & Ground
Finish Zinc
Free Length 95.25 mm
Inside Diameter 15.98 mm
Material Spring Steel
Outside Diameter 21.82 mm
Part Type Standard
Rate 8.93 N/mm
SKU 1561CS
Solid Length 40.89 mm
Suggested Max Deflection 27.94 mm
Suggested Max Load 244.64 N
Total Coils 14
Wire Diameter 2.92 mm
The 1561 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 1561CS compression spring is designed with a free length of 1.75" total of 28 coils, and a rate of 8.3 lbs/in providing a balanced combination of flexibility and strength. This spring coil, and its closed end configuration allows for efficient energy storage and release, making it suitable for applications requiring precise motion control.

The 1561 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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