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Century Spring

A11-28CS - 0.69" 302/304 Stainless Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from 302/304 stainless steel with 3.9 coils and closed & ground ends. This spring features an O.D. of 0.656", and an I.D. of 0.56".

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name A11-28
Ends Closed & Ground
Finish None
Free Length 0.69 in
Inside Diameter 0.56 in
Material 302/304 Stainless Steel
Outside Diameter 0.656 in
Part Type Standard
Rate 15 lbs/in
SKU A11-28CS
Solid Length 0.184 in
Suggested Max Deflection 0.389 in
Suggested Max Load 5.8 lbf
Total Coils 3.9
Wire Diameter 0.047 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name A11-28
Ends Closed & Ground
Finish None
Free Length 17.53 mm
Inside Diameter 14.22 mm
Material 302/304 Stainless Steel
Outside Diameter 16.66 mm
Part Type Standard
Rate 2.63 N/mm
SKU A11-28CS
Solid Length 4.67 mm
Suggested Max Deflection 9.88 mm
Suggested Max Load 25.8 N
Total Coils 3.9
Wire Diameter 1.19 mm
The compression spring A11-28CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality 302/304 stainless steel, the A11-28 compression spring design exhibits exceptional tensile strength and resilience.

The A11-28 design is manufactured with a free length of 0.69", with an outer diameter of 0.656", an inner diameter of 0.56", and a total of 3.9 coils, expertly designed to deliver consistent compression characteristics including a rate of 15 lbs/in.

The A11-28CS 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 A11-28 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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