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Century Spring

B12-5CS - 1.25" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 6 coils and closed & ground ends. This spring features an O.D. of 0.656", and an I.D. of 0.548".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B12-5
Ends Closed & Ground
Finish None
Free Length 1.25 in
Inside Diameter 0.548 in
Material Spring Steel
Outside Diameter 0.656 in
Part Type Standard
Rate 14 lbs/in
SKU B12-5CS
Solid Length 0.32 in
Suggested Max Deflection 0.62 in
Suggested Max Load 8.7 lbf
Total Coils 6
Wire Diameter 0.054 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B12-5
Ends Closed & Ground
Finish None
Free Length 31.75 mm
Inside Diameter 13.92 mm
Material Spring Steel
Outside Diameter 16.66 mm
Part Type Standard
Rate 2.45 N/mm
SKU B12-5CS
Solid Length 8.13 mm
Suggested Max Deflection 15.75 mm
Suggested Max Load 38.7 N
Total Coils 6
Wire Diameter 1.37 mm
The B12-5CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.054" diameter spring steel, the B12-5 spring design exhibits reliable strength across its 6 active coils, withstanding repeated compression cycles with a maximum load of 8.7 lbf without succumbing to fatigue.

We manufacture the B12-5 design to provide a compression spring that is 1.25" long at rest and provides a consistent rate of 14 lbs/in along its recommended maximum of 0.62" deflection. For best results, your application should fully accommodate the inner (0.548") and outer (0.656") diameters of this spring and be designed for its closed & ground end configuration.

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