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Century Spring

OO-20CS - 1.31" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 10 coils and closed & ground ends. This spring features an O.D. of 0.531", and an I.D. of 0.311".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name OO-20
Ends Closed & Ground
Finish Gold Iridite
Free Length 1.31 in
Inside Diameter 0.311 in
Material Spring Steel
Outside Diameter 0.531 in
Part Type Standard
Rate 353 lbs/in
SKU OO-20CS
Solid Length 1.1 in
Suggested Max Deflection 0.21 in
Suggested Max Load 73 lbf
Total Coils 10
Wire Diameter 0.11 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name OO-20
Ends Closed & Ground
Finish Gold Iridite
Free Length 33.27 mm
Inside Diameter 7.9 mm
Material Spring Steel
Outside Diameter 13.49 mm
Part Type Standard
Rate 61.81 N/mm
SKU OO-20CS
Solid Length 27.94 mm
Suggested Max Deflection 5.33 mm
Suggested Max Load 324.7 N
Total Coils 10
Wire Diameter 2.79 mm
The OO-20CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.11" diameter spring steel, the OO-20 spring design exhibits reliable strength across its 10 active coils, withstanding repeated compression cycles with a maximum load of 73 lbf without succumbing to fatigue.

We manufacture the OO-20 design to provide a compression spring that is 1.31" long at rest and provides a consistent rate of 353 lbs/in along its recommended maximum of 0.21" deflection. For best results, your application should fully accommodate the inner (0.311") and outer (0.531") diameters of this spring and be designed for its closed & ground end configuration.

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