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Century Spring

71004CS - 3" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 30.5 coils and closed & ground ends. This spring features an O.D. of 0.3", and an I.D. of 0.2".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 71004
Ends Closed & Ground
Finish None
Free Length 3 in
Inside Diameter 0.2 in
Material Music Wire
Outside Diameter 0.3 in
Part Type Standard
Rate 18 lbs/in
SKU 71004CS
Solid Length 1.49 in
Suggested Max Deflection 1.1 in
Suggested Max Load 20 lbf
Total Coils 30.5
Wire Diameter 0.05 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 71004
Ends Closed & Ground
Finish None
Free Length 76.2 mm
Inside Diameter 5.08 mm
Material Music Wire
Outside Diameter 7.62 mm
Part Type Standard
Rate 3.15 N/mm
SKU 71004CS
Solid Length 37.85 mm
Suggested Max Deflection 27.94 mm
Suggested Max Load 88.96 N
Total Coils 30.5
Wire Diameter 1.27 mm
The 71004CS 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 music wire, the 71004 spring design exhibits reliable strength across its 30.5 active coils, withstanding repeated compression cycles with a maximum load of 20 lbf without succumbing to fatigue.

We manufacture the 71004 design to provide a compression spring that is 3" long at rest and provides a consistent rate of 18 lbs/in along its recommended maximum of 1.1" deflection. For best results, your application should fully accommodate the inner (0.2") and outer (0.3") diameters of this spring and be designed for its closed & ground end configuration.

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