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Century Spring

509 - 1.06 Inch Spring Steel Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from Spring Steel with 7 coils and Closed ends. This spring features an O.D. of 0.437 Inch, and an I.D. of 0.312 Inch.

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 509
Ends Closed
Finish Zinc
Free Length 1.06 in
Inside Diameter 0.312 in
Material Spring Steel
Outside Diameter 0.437 in
Part Type Standard
Rate 80 lbs/in
SKU 509CS
Solid Length 0.5 in
Suggested Max Deflection 0.24 in
Suggested Max Load 19 lbf
Total Coils 7
Wire Diameter 0.0625 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 509
Ends Closed
Finish Zinc
Free Length 26.92 mm
Inside Diameter 7.92 mm
Material Spring Steel
Outside Diameter 11.1 mm
Part Type Standard
Rate 14.01 N/mm
SKU 509CS
Solid Length 12.7 mm
Suggested Max Deflection 6.1 mm
Suggested Max Load 84.51 N
Total Coils 7
Wire Diameter 1.59 mm
The 509CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.0625" diameter hard drawn, the 509 spring design exhibits reliable strength across its 7 active coils, withstanding repeated compression cycles with a maximum load of 19 lbf without succumbing to fatigue.

We manufacture the 509 design to provide a compression spring that is 1.06" long at rest and provides a consistent rate of 80 lbs/in along its recommended maximum of 0.24" deflection. For best results, your application should fully accommodate the inner (0.312") and outer (0.437") diameters of this spring and be designed for its closed end configuration.

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