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Century Spring

OO-21CS - 0.75" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 20 coils and closed ends. This spring features an O.D. of 0.125", and an I.D. of 0.085".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name OO-21
Ends Closed
Finish None
Free Length 0.75 in
Inside Diameter 0.085 in
Material Music Wire
Outside Diameter 0.125 in
Part Type Standard
Rate 11 lbs/in
SKU OO-21CS
Solid Length 0.42 in
Suggested Max Deflection 0.33 in
Suggested Max Load 3.6 lbf
Total Coils 20
Wire Diameter 0.02 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name OO-21
Ends Closed
Finish None
Free Length 19.05 mm
Inside Diameter 2.16 mm
Material Music Wire
Outside Diameter 3.18 mm
Part Type Standard
Rate 1.93 N/mm
SKU OO-21CS
Solid Length 10.67 mm
Suggested Max Deflection 8.38 mm
Suggested Max Load 16.01 N
Total Coils 20
Wire Diameter 0.51 mm
The compression spring OO-21CS is an essential component designed for applications requiring reliable force and energy storage. Crafted from high-quality music wire, the OO-21 compression spring design exhibits exceptional tensile strength and resilience.

The OO-21 design is manufactured with a free length of 0.75", with an outer diameter of 0.125", an inner diameter of 0.085", and a total of 20 coils, expertly designed to deliver consistent compression characteristics including a rate of 11 lbs/in.

The OO-21CS 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 OO-21 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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