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Century Spring

OO-77CS - 1.63" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 15 coils and closed & ground ends. This spring features an O.D. of 0.437", and an I.D. of 0.337".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name OO-77
Ends Closed & Ground
Finish None
Free Length 1.63 in
Inside Diameter 0.337 in
Material Spring Steel
Outside Diameter 0.437 in
Part Type Standard
Rate 12 lbs/in
SKU OO-77CS
Solid Length 0.75 in
Suggested Max Deflection 0.85 in
Suggested Max Load 10 lbf
Total Coils 15
Wire Diameter 0.05 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name OO-77
Ends Closed & Ground
Finish None
Free Length 41.4 mm
Inside Diameter 8.56 mm
Material Spring Steel
Outside Diameter 11.1 mm
Part Type Standard
Rate 2.1 N/mm
SKU OO-77CS
Solid Length 19.05 mm
Suggested Max Deflection 21.59 mm
Suggested Max Load 44.48 N
Total Coils 15
Wire Diameter 1.27 mm
The OO-77CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.05" diameter spring steel, the OO-77 spring design exhibits reliable strength across its 15 active coils, withstanding repeated compression cycles with a maximum load of 10 lbf without succumbing to fatigue.

We manufacture the OO-77 design to provide a compression spring that is 1.63" long at rest and provides a consistent rate of 12 lbs/in along its recommended maximum of 0.85" deflection. For best results, your application should fully accommodate the inner (0.337") and outer (0.437") diameters of this spring and be designed for its closed & ground end configuration.

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