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Century Spring

71509CS - 1.25" Music Wire Compression Spring

Inventory Status
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Compression spring manufactured from music wire with 7.5 coils and closed & ground ends. This spring features an O.D. of 0.48", and an I.D. of 0.39".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 71509
Ends Closed & Ground
Finish None
Free Length 1.25 in
Inside Diameter 0.39 in
Material Music Wire
Outside Diameter 0.48 in
Part Type Standard
Rate 13 lbs/in
SKU 71509CS
Solid Length 0.34 in
Suggested Max Deflection 0.78 in
Suggested Max Load 10 lbf
Total Coils 7.5
Wire Diameter 0.045 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 71509
Ends Closed & Ground
Finish None
Free Length 31.75 mm
Inside Diameter 9.91 mm
Material Music Wire
Outside Diameter 12.19 mm
Part Type Standard
Rate 2.28 N/mm
SKU 71509CS
Solid Length 8.64 mm
Suggested Max Deflection 19.81 mm
Suggested Max Load 44.48 N
Total Coils 7.5
Wire Diameter 1.14 mm
The 71509CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.045" diameter music wire, the 71509 spring design exhibits reliable strength across its 7.5 active coils, withstanding repeated compression cycles with a maximum load of 10 lbf without succumbing to fatigue.

We manufacture the 71509 design to provide a compression spring that is 1.25" long at rest and provides a consistent rate of 13 lbs/in along its recommended maximum of 0.78" deflection. For best results, your application should fully accommodate the inner (0.39") and outer (0.48") diameters of this spring and be designed for its closed & ground end configuration.

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