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Century Spring

72603CS - 4.5" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 15.5 coils and closed & ground ends. This spring features an O.D. of 1.1", and an I.D. of 0.83".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72603
Ends Closed & Ground
Finish None
Free Length 4.5 in
Inside Diameter 0.83 in
Material Music Wire
Outside Diameter 1.1 in
Part Type Standard
Rate 39 lbs/in
SKU 72603CS
Solid Length 2.09 in
Suggested Max Deflection 2.4 in
Suggested Max Load 95 lbf
Total Coils 15.5
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72603
Ends Closed & Ground
Finish None
Free Length 114.3 mm
Inside Diameter 21.08 mm
Material Music Wire
Outside Diameter 27.94 mm
Part Type Standard
Rate 6.83 N/mm
SKU 72603CS
Solid Length 53.09 mm
Suggested Max Deflection 60.96 mm
Suggested Max Load 422.56 N
Total Coils 15.5
Wire Diameter 3.43 mm
The 72603CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.135" diameter music wire, the 72603 spring design exhibits reliable strength across its 15.5 active coils, withstanding repeated compression cycles with a maximum load of 95 lbf without succumbing to fatigue.

We manufacture the 72603 design to provide a compression spring that is 4.5" long at rest and provides a consistent rate of 39 lbs/in along its recommended maximum of 2.4" deflection. For best results, your application should fully accommodate the inner (0.83") and outer (1.1") diameters of this spring and be designed for its closed & ground end configuration.

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