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3509CS - 0.53" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 5.5 coils and closed & ground ends. This spring features an O.D. of 0.343", and an I.D. of 0.283".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 3509
Ends Closed & Ground
Finish Zinc
Free Length 0.53 in
Inside Diameter 0.283 in
Material Music Wire
Outside Diameter 0.343 in
Part Type Standard
Rate 11 lbs/in
SKU 3509CS
Solid Length 0.17 in
Suggested Max Deflection 0.37 in
Suggested Max Load 4 lbf
Total Coils 5.5
Wire Diameter 0.03 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 3509
Ends Closed & Ground
Finish Zinc
Free Length 13.46 mm
Inside Diameter 7.19 mm
Material Music Wire
Outside Diameter 8.71 mm
Part Type Standard
Rate 1.93 N/mm
SKU 3509CS
Solid Length 4.32 mm
Suggested Max Deflection 9.4 mm
Suggested Max Load 17.79 N
Total Coils 5.5
Wire Diameter 0.76 mm
The 3509CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.03" diameter music wire, the 3509 spring design exhibits reliable strength across its 5.5 active coils, withstanding repeated compression cycles with a maximum load of 4 lbf without succumbing to fatigue.

We manufacture the 3509 design to provide a compression spring that is 0.53" long at rest and provides a consistent rate of 11 lbs/in along its recommended maximum of 0.37" deflection. For best results, your application should fully accommodate the inner (0.283") and outer (0.343") diameters of this spring and be designed for its closed & ground end configuration.