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11811CS - 3.59" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 20 coils and closed & ground ends. This spring features an O.D. of 0.656", and an I.D. of 0.428".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 11811
Ends Closed & Ground
Finish Zinc
Free Length 3.59 in
Inside Diameter 0.428 in
Material Spring Steel
Outside Diameter 0.656 in
Part Type Standard
Rate 85 lbs/in
SKU 11811CS
Solid Length 2.28 in
Suggested Max Deflection 0.8 in
Suggested Max Load 68 lbf
Total Coils 20
Wire Diameter 0.114 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 11811
Ends Closed & Ground
Finish Zinc
Free Length 91.19 mm
Inside Diameter 10.87 mm
Material Spring Steel
Outside Diameter 16.66 mm
Part Type Standard
Rate 14.88 N/mm
SKU 11811CS
Solid Length 57.91 mm
Suggested Max Deflection 20.32 mm
Suggested Max Load 302.46 N
Total Coils 20
Wire Diameter 2.9 mm
The 11811 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 11811CS compression spring is designed with a free length of 0.84" total of 5 coils, and a rate of 17 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 11811 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.