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Century Spring

1861CS - 4.31" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 9.75 coils and closed & ground ends. This spring features an O.D. of 1.64", and an I.D. of 1.37".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 1861
Ends Closed & Ground
Finish Zinc
Free Length 4.31 in
Inside Diameter 1.37 in
Material Spring Steel
Outside Diameter 1.64 in
Part Type Standard
Rate 18 lbs/in
SKU 1861CS
Solid Length 1.32 in
Suggested Max Deflection 2.6 in
Suggested Max Load 47 lbf
Total Coils 9.75
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 1861
Ends Closed & Ground
Finish Zinc
Free Length 109.47 mm
Inside Diameter 34.8 mm
Material Spring Steel
Outside Diameter 41.66 mm
Part Type Standard
Rate 3.15 N/mm
SKU 1861CS
Solid Length 33.53 mm
Suggested Max Deflection 66.04 mm
Suggested Max Load 209.06 N
Total Coils 9.75
Wire Diameter 3.43 mm
The 1861 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 1861CS compression spring is designed with a free length of 1.22" total of 10 coils, and a rate of 134 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 1861 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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