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Century Spring

2531CS - 3" Music Wire Compression Spring

Inventory Status
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Compression spring manufactured from music wire with 40 coils and closed ends. This spring features an O.D. of 0.296", and an I.D. of 0.226".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 2531
Ends Closed
Finish Zinc
Free Length 3 in
Inside Diameter 0.226 in
Material Music Wire
Outside Diameter 0.296 in
Part Type Standard
Rate 3.2 lbs/in
SKU 2531CS
Solid Length 1.44 in
Suggested Max Deflection 1.6 in
Suggested Max Load 5 lbf
Total Coils 40
Wire Diameter 0.035 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 2531
Ends Closed
Finish Zinc
Free Length 76.2 mm
Inside Diameter 5.74 mm
Material Music Wire
Outside Diameter 7.52 mm
Part Type Standard
Rate 0.56 N/mm
SKU 2531CS
Solid Length 36.58 mm
Suggested Max Deflection 40.64 mm
Suggested Max Load 22.24 N
Total Coils 40
Wire Diameter 0.89 mm
The 2531CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.035" diameter music wire, the 2531 spring design exhibits reliable strength across its 40 active coils, withstanding repeated compression cycles with a maximum load of 5 lbf without succumbing to fatigue.

We manufacture the 2531 design to provide a compression spring that is 3" long at rest and provides a consistent rate of 3.2 lbs/in along its recommended maximum of 1.6" deflection. For best results, your application should fully accommodate the inner (0.226") and outer (0.296") diameters of this spring and be designed for its closed end configuration.

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