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Century Spring

A11-3CS - 1.31" Phosphor Bronze Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from phosphor bronze with 14.5 coils and closed & ground ends. This spring features an O.D. of 0.437", and an I.D. of 0.363".

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name A11-3
Ends Closed & Ground
Finish None
Free Length 1.31 in
Inside Diameter 0.363 in
Material Phosphor Bronze
Outside Diameter 0.437 in
Part Type Standard
Rate 1.8 lbs/in
SKU A11-3CS
Solid Length 0.54 in
Suggested Max Deflection 0.78 in
Suggested Max Load 1.4 lbf
Total Coils 14.5
Wire Diameter 0.037 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name A11-3
Ends Closed & Ground
Finish None
Free Length 33.27 mm
Inside Diameter 9.22 mm
Material Phosphor Bronze
Outside Diameter 11.1 mm
Part Type Standard
Rate 0.32 N/mm
SKU A11-3CS
Solid Length 13.72 mm
Suggested Max Deflection 19.81 mm
Suggested Max Load 6.23 N
Total Coils 14.5
Wire Diameter 0.94 mm
The compression spring A11-3CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality phosphor bronze, the A11-3 compression spring design exhibits exceptional tensile strength and resilience.

The A11-3 design is manufactured with a free length of 1.31", with an outer diameter of 0.437", an inner diameter of 0.363", and a total of 14.5 coils, expertly designed to deliver consistent compression characteristics including a rate of 1.8 lbs/in.

The A11-3CS compression spring is ideally suited for use in a wide range of mechanical assemblies, including but not limited to automotive suspension systems, industrial machinery, and electronic devices.

In summary, the compression spring A11-3 design stands out for its superior material properties, thoughtful design, and versatility in application. It is a prime choice for engineers committed to excellence and innovation in their projects.

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