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Century Spring

B5-9CS - 0.72" Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from spring steel with 4.5 coils and closed & ground ends. This spring features an O.D. of 0.5", and an I.D. of 0.424".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name B5-9
Ends Closed & Ground
Finish None
Free Length 0.72 in
Inside Diameter 0.424 in
Material Spring Steel
Outside Diameter 0.5 in
Part Type Standard
Rate 12 lbs/in
SKU B5-9CS
Solid Length 0.17 in
Suggested Max Deflection 0.35 in
Suggested Max Load 4.3 lbf
Total Coils 4.5
Wire Diameter 0.038 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name B5-9
Ends Closed & Ground
Finish None
Free Length 18.29 mm
Inside Diameter 10.77 mm
Material Spring Steel
Outside Diameter 12.7 mm
Part Type Standard
Rate 2.1 N/mm
SKU B5-9CS
Solid Length 4.32 mm
Suggested Max Deflection 8.89 mm
Suggested Max Load 19.13 N
Total Coils 4.5
Wire Diameter 0.97 mm
The B5-9CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.038" diameter spring steel, the B5-9 spring design exhibits reliable strength across its 4.5 active coils, withstanding repeated compression cycles with a maximum load of 4.3 lbf without succumbing to fatigue.

We manufacture the B5-9 design to provide a compression spring that is 0.72" long at rest and provides a consistent rate of 12 lbs/in along its recommended maximum of 0.35" deflection. For best results, your application should fully accommodate the inner (0.424") and outer (0.5") diameters of this spring and be designed for its closed & ground end configuration.

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