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Century Spring

75540CS - 1.181" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 6.6 coils and closed & ground ends. This spring features an O.D. of 0.472", and an I.D. of 0.398".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 75540
Ends Closed & Ground
Finish Zinc
Free Length 1.181 in
Inside Diameter 0.398 in
Material Music Wire
Outside Diameter 0.472 in
Part Type Metric
Rate 7.78 lbs/in
SKU 75540CS
Solid Length 0.246 in
Suggested Max Deflection 0.754 in
Suggested Max Load 5.866 lbf
Total Coils 6.6
Wire Diameter 0.037 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 75540
Ends Closed & Ground
Finish Zinc
Free Length 30 mm
Inside Diameter 10.11 mm
Material Music Wire
Outside Diameter 11.99 mm
Part Type Metric
Rate 1.36 N/mm
SKU 75540CS
Solid Length 6.25 mm
Suggested Max Deflection 19.15 mm
Suggested Max Load 26.09 N
Total Coils 6.6
Wire Diameter 0.94 mm
The 75540CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.037" diameter music wire, the 75540 spring design exhibits reliable strength across its 6.6 active coils, withstanding repeated compression cycles with a maximum load of 5.866 lbf without succumbing to fatigue.

We manufacture the 75540 design to provide a compression spring that is 1.181" long at rest and provides a consistent rate of 7.78 lbs/in along its recommended maximum of 0.754" deflection. For best results, your application should fully accommodate the inner (0.398") and outer (0.472") diameters of this spring and be designed for its closed & ground end configuration.

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