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Century Spring

3405CS - 11" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 38 coils and closed & ground ends. This spring features an O.D. of 0.843", and an I.D. of 0.679".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3405
Ends Closed & Ground
Finish Zinc
Free Length 11 in
Inside Diameter 0.679 in
Material Spring Steel
Outside Diameter 0.843 in
Part Type Standard
Rate 4.1 lbs/in
SKU 3405CS
Solid Length 3.12 in
Suggested Max Deflection 5.5 in
Suggested Max Load 22 lbf
Total Coils 38
Wire Diameter 0.082 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3405
Ends Closed & Ground
Finish Zinc
Free Length 279.4 mm
Inside Diameter 17.25 mm
Material Spring Steel
Outside Diameter 21.41 mm
Part Type Standard
Rate 0.72 N/mm
SKU 3405CS
Solid Length 79.25 mm
Suggested Max Deflection 139.7 mm
Suggested Max Load 97.86 N
Total Coils 38
Wire Diameter 2.08 mm
The 3405 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 3405CS compression spring is designed with a free length of 2.75" total of 8 coils, and a rate of 23 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 3405 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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