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Z-91CS - 0.56" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 8 coils and closed ends. This spring features an O.D. of 0.188", and an I.D. of 0.128".

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name Z-91
Ends Closed
Finish Zinc
Free Length 0.56 in
Inside Diameter 0.128 in
Material Music Wire
Outside Diameter 0.188 in
Part Type Standard
Rate 50 lbs/in
SKU Z-91CS
Solid Length 0.27 in
Suggested Max Deflection 0.15 in
Suggested Max Load 7.7 lbf
Total Coils 8
Wire Diameter 0.03 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name Z-91
Ends Closed
Finish Zinc
Free Length 14.22 mm
Inside Diameter 3.25 mm
Material Music Wire
Outside Diameter 4.78 mm
Part Type Standard
Rate 8.76 N/mm
SKU Z-91CS
Solid Length 6.86 mm
Suggested Max Deflection 3.81 mm
Suggested Max Load 34.25 N
Total Coils 8
Wire Diameter 0.76 mm
The Z-91CS 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 Z-91 spring design exhibits reliable strength across its 8 active coils, withstanding repeated compression cycles with a maximum load of 7.7 lbf without succumbing to fatigue.

We manufacture the Z-91 design to provide a compression spring that is 0.56" long at rest and provides a consistent rate of 50 lbs/in along its recommended maximum of 0.15" deflection. For best results, your application should fully accommodate the inner (0.128") and outer (0.188") diameters of this spring and be designed for its closed end configuration.