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Century Spring

72639CS - 1.25" Music Wire Compression Spring

Inventory Status
Estimated Lead Time

Compression spring manufactured from music wire with 4.25 coils and closed & ground ends. This spring features an O.D. of 1.225", and an I.D. of 1.033".

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Unit System
Specs (in standard)
Label Value
Brand Century Spring
Display Name 72639
Ends Closed & Ground
Finish None
Free Length 1.25 in
Inside Diameter 1.033 in
Material Music Wire
Outside Diameter 1.225 in
Part Type Standard
Rate 39 lbs/in
SKU 72639CS
Solid Length 0.41 in
Suggested Max Deflection 0.84 in
Suggested Max Load 32 lbf
Total Coils 4.25
Wire Diameter 0.096 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name 72639
Ends Closed & Ground
Finish None
Free Length 31.75 mm
Inside Diameter 26.24 mm
Material Music Wire
Outside Diameter 31.12 mm
Part Type Standard
Rate 6.83 N/mm
SKU 72639CS
Solid Length 10.41 mm
Suggested Max Deflection 21.34 mm
Suggested Max Load 142.34 N
Total Coils 4.25
Wire Diameter 2.44 mm
The 72639CS compression spring is a meticulously engineered component designed for a wide range of industrial applications requiring reliable performance and durability. Crafted from premium 0.096" diameter music wire, the 72639 spring design exhibits reliable strength across its 4.25 active coils, withstanding repeated compression cycles with a maximum load of 32 lbf without succumbing to fatigue.

We manufacture the 72639 design to provide a compression spring that is 1.25" long at rest and provides a consistent rate of 39 lbs/in along its recommended maximum of 0.84" deflection. For best results, your application should fully accommodate the inner (1.033") and outer (1.225") diameters of this spring and be designed for its closed & ground end configuration.

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