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Century Spring

821CS - 2.5" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 9.25 coils and closed & ground ends. This spring features an O.D. of 1.188", and an I.D. of 0.892".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 821
Ends Closed & Ground
Finish Zinc
Free Length 2.5 in
Inside Diameter 0.892 in
Material Spring Steel
Outside Diameter 1.188 in
Part Type Standard
Rate 85 lbs/in
SKU 821CS
Solid Length 1.37 in
Suggested Max Deflection 0.98 in
Suggested Max Load 83 lbf
Total Coils 9.25
Wire Diameter 0.148 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 821
Ends Closed & Ground
Finish Zinc
Free Length 63.5 mm
Inside Diameter 22.66 mm
Material Spring Steel
Outside Diameter 30.18 mm
Part Type Standard
Rate 14.88 N/mm
SKU 821CS
Solid Length 34.8 mm
Suggested Max Deflection 24.89 mm
Suggested Max Load 369.18 N
Total Coils 9.25
Wire Diameter 3.76 mm
The 821 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 821CS compression spring is designed with a free length of 10" total of 35.8 coils, and a rate of 22 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 821 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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