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Century Spring

O-155CS - 0.5" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 6.5 coils and closed ends. This spring features an O.D. of 0.25", and an I.D. of 0.172".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name O-155
Ends Closed
Finish Zinc
Free Length 0.5 in
Inside Diameter 0.172 in
Material Spring Steel
Outside Diameter 0.25 in
Part Type Standard
Rate 79 lbs/in
SKU O-155CS
Solid Length 0.29 in
Suggested Max Deflection 0.11 in
Suggested Max Load 8.8 lbf
Total Coils 6.5
Wire Diameter 0.039 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name O-155
Ends Closed
Finish Zinc
Free Length 12.7 mm
Inside Diameter 4.37 mm
Material Spring Steel
Outside Diameter 6.35 mm
Part Type Standard
Rate 13.83 N/mm
SKU O-155CS
Solid Length 7.37 mm
Suggested Max Deflection 2.79 mm
Suggested Max Load 39.14 N
Total Coils 6.5
Wire Diameter 0.99 mm
The O-155CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.039" diameter spring steel, the O-155 spring design exhibits reliable strength across its 6.5 active coils, withstanding repeated compression cycles with a maximum load of 8.8 lbf without succumbing to fatigue.

We manufacture the O-155 design to provide a compression spring that is 0.5" long at rest and provides a consistent rate of 79 lbs/in along its recommended maximum of 0.11" deflection. For best results, your application should fully accommodate the inner (0.172") and outer (0.25") diameters of this spring and be designed for its closed end configuration.

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