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Century Spring

3858CS - 9" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 86 coils and closed ends. This spring features an O.D. of 0.312", and an I.D. of 0.228".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3858
Ends Closed
Finish Zinc
Free Length 9 in
Inside Diameter 0.228 in
Material Spring Steel
Outside Diameter 0.312 in
Part Type Standard
Rate 2.7 lbs/in
SKU 3858CS
Solid Length 3.65 in
Suggested Max Deflection 3.3 in
Suggested Max Load 8.9 lbf
Total Coils 86
Wire Diameter 0.042 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3858
Ends Closed
Finish Zinc
Free Length 228.6 mm
Inside Diameter 5.79 mm
Material Spring Steel
Outside Diameter 7.92 mm
Part Type Standard
Rate 0.47 N/mm
SKU 3858CS
Solid Length 92.71 mm
Suggested Max Deflection 83.82 mm
Suggested Max Load 39.59 N
Total Coils 86
Wire Diameter 1.07 mm
The 3858 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 3858CS compression spring is designed with a free length of 2.75" total of 21 coils, and a rate of 2.2 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 3858 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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