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Century Spring

1803CS - 0.53" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 4.5 coils and closed ends. This spring features an O.D. of 0.42", and an I.D. of 0.33".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 1803
Ends Closed
Finish Zinc
Free Length 0.53 in
Inside Diameter 0.33 in
Material Music Wire
Outside Diameter 0.42 in
Part Type Standard
Rate 44 lbs/in
SKU 1803CS
Solid Length 0.25 in
Suggested Max Deflection 0.26 in
Suggested Max Load 12 lbf
Total Coils 4.5
Wire Diameter 0.045 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 1803
Ends Closed
Finish Zinc
Free Length 13.46 mm
Inside Diameter 8.38 mm
Material Music Wire
Outside Diameter 10.67 mm
Part Type Standard
Rate 7.7 N/mm
SKU 1803CS
Solid Length 6.35 mm
Suggested Max Deflection 6.6 mm
Suggested Max Load 53.38 N
Total Coils 4.5
Wire Diameter 1.14 mm
The 1803CS 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 1803 spring design exhibits reliable strength across its 4.5 active coils, withstanding repeated compression cycles with a maximum load of 12 lbf without succumbing to fatigue.

We manufacture the 1803 design to provide a compression spring that is 0.53" long at rest and provides a consistent rate of 44 lbs/in along its recommended maximum of 0.26" deflection. For best results, your application should fully accommodate the inner (0.33") and outer (0.42") diameters of this spring and be designed for its closed end configuration.

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